%ental%

a. [ Cf. F. accidentel, earlier accidental. ] 1. Happening by chance, or unexpectedly; taking place not according to the usual course of things; casual; fortuitous; as, an accidental visit. [ 1913 Webster ]

2. Nonessential; not necessary belonging; incidental; as, are accidental to a play. [ 1913 Webster ]

Accidental chords (Mus.), those which contain one or more tones foreign to their proper harmony. --
Accidental colors (Opt.), colors depending on the hypersensibility of the retina of the eye for complementary colors. They are purely subjective sensations of color which often result from the contemplation of actually colored bodies. --
Accidental point (Persp.), the point in which a right line, drawn from the eye, parallel to a given right line, cuts the perspective plane; so called to distinguish it from the principal point, or point of view, where a line drawn from the eye perpendicular to the perspective plane meets this plane. --
Accidental lights (Paint.), secondary lights; effects of light other than ordinary daylight, such as the rays of the sun darting through a cloud, or between the leaves of trees; the effect of moonlight, candlelight, or burning bodies. Fairholt. [ 1913 Webster ]

Syn. -- Casual; fortuitous; contingent; occasional; adventitious. -- Accidental, Incidental, Casual, Fortuitous, Contingent. We speak of a thing as accidental when it falls out as by chance, and not in the regular course of things; as, an accidental meeting, an accidental advantage, etc. We call a thing incidental when it falls, as it were, into some regular course of things, but is secondary, and forms no essential part thereof; as, an incremental remark, an incidental evil, an incidental benefit. We speak of a thing as casual, when it falls out or happens, as it were, by mere chance, without being prearranged or premeditated; as, a casual remark or encounter; a casual observer. An idea of the unimportant is attached to what is casual. Fortuitous is applied to what occurs without any known cause, and in opposition to what has been foreseen; as, a fortuitous concourse of atoms. We call a thing contingent when it is such that, considered in itself, it may or may not happen, but is dependent for its existence on something else; as, the time of my coming will be contingent on intelligence yet to be received. [ 1913 Webster ]

n. Accidental character or effect. Ruskin. [ 1913 Webster ]

n. The quality of being accidental; accidentalness. [ R. ] Coleridge. [ 1913 Webster ]

adv. In an accidental manner; unexpectedly; by chance; unintentionally; casually; fortuitously; not essentially. [ 1913 Webster ]

n. The quality of being accidental; casualness. [ 1913 Webster ]

a. Supplying food; having the quality of nourishing; furnishing the materials for natural growth; as, alimental sap. [ 1913 Webster ]

adv. So as to serve for nourishment or food; nourishing quality. Sir T. Browne. [ 1913 Webster ]

a. [ Pref. a- + placental. ] Belonging to the Aplacentata; without placenta. [ 1913 Webster ]

a. Of or pertaining to silver; resembling, containing, or combined with, silver. [ 1913 Webster ]

n. [ NL.; L. argentum silver + E. aluminium. ] A (patented) alloy of aluminium and silver, with a density of about 2.9. [ Webster 1913 Suppl. ]

a. [ L. argumentalis. ] Of, pertaining to, or containing, argument; argumentative. [ 1913 Webster ]

{ } a. Of or pertaining to ink; inky; black, like ink; as, atramental galls; atramentous spots. [ 1913 Webster ]

a. Having two teeth. Swift. [ 1913 Webster ]

a. Of or pertaining to cement, as of a tooth; as, cemental tubes. R. Owen. [ 1913 Webster ]

n. [ L. centum a hundred. ] A weight of one hundred pounds avoirdupois; -- called in many parts of the United States a Hundredweight. [ 1913 Webster ]

n. Relating to a hundred. [ 1913 Webster ]

Cental system, the method of buying and selling by the cental, or hundredweight. [ 1913 Webster ]

a. Of or pertaining to a client. [ 1913 Webster ]

A dependent and cliental relation. Burke. [ 1913 Webster ]

I sat down in the cliental chair. Dickens. [ 1913 Webster ]

a. Coincident. [ 1913 Webster ]

adj. 1. divided up into compartments or categories. [ WordNet 1.5 ]

a. 1. Supplying, or tending to supply, a deficiency; fully completing. “Complemental ceremony.” Prynne. [ 1913 Webster ]

2. Complimentary; courteous. [ Obs. ] Shak. [ 1913 Webster ]

Complemental air (Physiol.), the air (averaging 100 cubic inches) which can be drawn into the lungs in addition to the tidal air, by the deepest possible inspiration. --
Complemental males (Zool.), peculiar small males living parasitically on the ordinary hermaphrodite individuals of certain barnacles. [ 1913 Webster ]

a. Complimentary. [ Obs. ] [ 1913 Webster ]

Languages . . . grow rich and abundant in complimental phrases, and such froth. Sir H. Wotton.

-- Com`pli*men"tal*ly, adv. [Obs.] Boyle. -- Com`pli*men"tal*ness, n. [ Obs. ] Hammond. [ 1913 Webster ]

a. 1. Of or pertaining to a continent. [ 1913 Webster ]

2. Of or pertaining to the main land of Europe, in distinction from the adjacent islands, especially England; as, a continental tour; a continental coalition. Macaulay. [ 1913 Webster ]

No former king had involved himself so frequently in the labyrinth of continental alliances. Hallam. [ 1913 Webster ]

3. (Amer. Hist.) Of or pertaining to the confederated colonies collectively, in the time of the Revolutionary War; as, Continental money. [ 1913 Webster ]

The army before Boston was designated as the Continental army, in contradistinction to that under General Gage, which was called the “Ministerial army.” W. Irving. [ 1913 Webster ]

Continental Congress. See under Congress. --
Continental system (Hist.), the blockade of Great Britain ordered by Napoleon by the decree of Berlin, Nov. 21, 1806; the object being to strike a blow at the maritime and commercial supremacy of Great Britain, by cutting her off from all intercourse with the continent of Europe. [ 1913 Webster ]

n. 1. (Amer. Hist.) A soldier in the Continental army. See Continental, a., 3. [ 1913 Webster ]

2. (Amer. Hist.) a piece of the Continental currency, paper money issued under authority of the Continental Congress. See Continental, a., 3. [ 1913 Webster ]

"Not worth a continental." was said of Continental currency after the American revolution, when it was considered almost worthless. Eventually, under Alexander Hamilton's direction at the Treasury department, the currency was all redeemed at full value. [ PJC ]

. the movements of continents relative to each other across the Earth's surface; see plate tectonics. [ PJC ]

. (Automobiles) A transmission arrangement in which the longitudinal crank shaft drives the rear wheels through a clutch, change-speed gear, countershaft, and two parallel side chains, in order. [ Webster 1913 Suppl. ]

. A broad ice sheet resting on a plain or plateau and spreading outward from a central névé, or region of accumulation. [ Webster 1913 Suppl. ]

def>A method of pronouncing Latin and Greek in which the vowels have their more familiar Continental values, as in German and Italian, the consonants being pronounced mostly as in English. The stricter form of this method of pronouncing Latin approaches the Roman, the modified form the English, pronunciation. The Continental method of Greek pronunciation is often called Erasmian. [ Webster 1913 Suppl. ]

. (Hist.) The system of commercial blockade aiming to exclude England from commerce with the Continent instituted by the
Berlin decree, which Napoleon I. issued from Berlin Nov. 21, 1806, declaring the British Isles to be in a state of blockade, and British subjects, property, and merchandise subject to capture, and excluding British ships from all parts of Europe under French dominion. The retaliatory measures of England were followed by the
Milan decree, issued by Napoleon from Milan Dec. 17, 1807, imposing further restrictions, and declaring every ship going to or from a port of England or her colonies to be lawful prize. [ Webster 1913 Suppl. ]

n. [ Cf. F. dentale. See Dental, a. ] 1. An articulation or letter formed by the aid of the teeth. [ 1913 Webster ]

2. (Zool.) A marine mollusk of the genus Dentalium, with a curved conical shell resembling a tooth. See Dentalium. [ 1913 Webster ]

a. [ L. dens, dentis, tooth: cf. F. dental. See Tooth. ] 1. Of or pertaining to the teeth or to dentistry; as, dental surgery. [ 1913 Webster ]

2. (Phon.) Formed by the aid of the teeth; -- said of certain articulations and the letters representing them; as, d and t are dental letters. [ 1913 Webster ]

Dental formula (Zool.), a brief notation used by zoologists to denote the number and kind of teeth of a mammal. --
Dental surgeon, a dentist. [ 1913 Webster ]

n. The quality of being formed by the aid of the teeth. [ 1913 Webster ]

‖n. [ NL., fr. L. dens, dentis, tooth. ] (Zool.) A genus of marine mollusks belonging to the Scaphopoda, having a tubular conical shell. [ 1913 Webster ]

a. Pertaining to a department or division. Burke. [ 1913 Webster ]

a. Causing detriment; injurious; hurtful. [ 1913 Webster ]

Neither dangerous nor detrimental to the donor. Addison.

Syn. -- Injurious; hurtful; prejudicial; disadvantageous; mischievous; pernicious. [ 1913 Webster ]

n. The quality of being detrimental; injuriousness. [ 1913 Webster ]

a. Pertaining to, or characteristic of, the process of development; as, the developmental power of a germ. Carpenter. [ 1913 Webster ]

a. 1. Of or pertaining to instruction. [ Obs. ] Dr. H. More. [ 1913 Webster ]

2. Of or pertaining to written evidence; documentary; as, documental testimony. [ 1913 Webster ]

a. [ Gr. 'ekto`s outside + &unr_; inside. ] (Biol.) Relating to, or connected with, the two primitive germ layers, the ectoderm and ectoderm; as, the “ectental line” or line of juncture of the two layers in the segmentation of the ovum. C. S. Minot. [ 1913 Webster ]

a. See Edentate, a. -- n. (Zoöl.) One of the Edentata. [ 1913 Webster ]

a. See Edentate, a. [ 1913 Webster ]

a. 1. Pertaining to the elements, first principles, and primary ingredients, or to the four supposed elements of the material world; as, elemental air. “Elemental strife.” Pope. [ 1913 Webster ]

2. Pertaining to rudiments or first principles; rudimentary; elementary. “The elemental rules of erudition.” Cawthorn. [ 1913 Webster ]

a. The theory that the heathen divinities originated in the personification of elemental powers. [ 1913 Webster ]

n. The condition of being composed of elements, or a thing so composed. [ 1913 Webster ]

adv. According to elements; literally; as, the words, “Take, eat; this is my body, ” elementally understood. [ 1913 Webster ]

n. a type of large-holed Swiss cheese.
Syn. -- Emmenthal, Emmental, Emmenthaler. [ WordNet 1.5 ]

a. Pertaining to an emolument; profitable. [ R. ] Evelyn.

a. [ See Ent-. ] (Anat.) Pertaining to, or situated near, central or deep parts; inner; -- opposed to ectal. B. G. Wilder. [ 1913 Webster ]

adj. 1. of or pertaining to the environment; as, environmental factors. [ WordNet 1.5 ]

2. of or pertaining to the environment (definition 2); as, environmental pollution; environmental disaster; environmental cleanup; environmental deterioration. [ WordNet 1.5 ]

THOUSANDS of dead fish and other marine species, suffocated by a rotting, glutinous morass which spreads over kilometres of coral reefs.
This scenario has all the hallmarks of a unnatural environmental disaster resulting from environmental negligence. However this isn't the case, instead the cause -- coral spawn slick deoxygenation -- is a natural event which has the potential to occur periodically on the reefs of the West Pilbara. Michael Borowitzka (“Natural event spawns environmental disaster” in Murdoch News, October 12, 1995)