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n. the aspect of counterintelligence designed to detect and prevent subversive activities.
Syn. -- countersubversion. [ WordNet 1.5 ]

n. [ L. obvention, fr. obvenire to come before or in the way of, to befall; ob (see Ob-) + venire to come: cf. F. obvention. ] The act of happening incidentally; that which happens casually; an incidental advantage; an occasional offering. [ Obs. ] “Tithes and other obventions.” Spenser. [ 1913 Webster ]

Legacies bequeathed by the deaths of princes and great persons, and other casualities and obventions. Fuller. [ 1913 Webster ]

a. [ L. obversans, p. pr. of obversari to hover before; ob (see Ob-) + versare to move about. ] Conversant; familiar. [ Obs. ] Bacon. [ 1913 Webster ]

a. [ L. obversus, p. p. of obvertere. See Obvert. ] Having the base, or end next the attachment, narrower than the top, as a leaf. [ 1913 Webster ]

n. [ Cf. F. obverse, obvers. See Obverse, a. ] 1. The face of a coin which has the principal image or inscription upon it; -- the other side being the reverse. [ 1913 Webster ]

2. Anything necessarily involved in, or answering to, another; the more apparent or conspicuous of two possible sides, or of two corresponding things. [ 1913 Webster ]

The fact that it [ a belief ] invariably exists being the obverse of the fact that there is no alternative belief. H. Spencer. [ 1913 Webster ]

adv. In an obverse manner. [ 1913 Webster ]

n. [ L. obversio a turning towards. ] 1. The act of turning toward or downward. [ 1913 Webster ]

2. (Logic) The act of immediate inference, by which we deny the opposite of anything which has been affirmed; as, all men are mortal; then, by obversion, no men are immortal. This is also described as “immediate inference by privative conception.” Bain. [ 1913 Webster ]

v. t. [ imp. & p. p. Obverted; p. pr. & vb. n. Obverting. ] [ L. obvertere; ob (see Ob-) + vertere to turn. See Verse. ] To turn toward. [ 1913 Webster ]

If its base be obverted towards us. I. Watts. [ 1913 Webster ]

v. t. [ imp. & p. p. Obviated p. pr. & vb. n. Obviating. ] [ L. obviare; ob (see Ob-) + viare to go, fr. via way. See Voyage. ] [ 1913 Webster ]

1. To meet in the way. [ Obs. ] [ 1913 Webster ]

Not to stir a step to obviate any of a different religion. Fuller. [ 1913 Webster ]

2. To anticipate; to prevent by interception; to remove from the way or path; to make unnecessary; as, to obviate the necessity of going. [ 1913 Webster ]

To lay down everything in its full light, so as to obviate all exceptions. Woodward. [ 1913 Webster ]

adj. pren. making impossible or unnecessary.
Syn. -- preclusive. [ WordNet 1.5 ]

n. The act of obviating, or the state of being obviated. [ 1913 Webster ]

a. [ L. obvius; ob (see Ob-) + via way. See Voyage. ] 1. Opposing; fronting. [ Obs. ] [ 1913 Webster ]

To the evil turn
My obvious breast. Milton. [ 1913 Webster ]

2. Exposed; subject; open; liable. [ Obs. ] “Obvious to dispute.” Milton. [ 1913 Webster ]

3. Easily discovered, seen, or understood; readily perceived by the eye or the intellect; plain; evident; apparent; as, an obvious meaning; an obvious remark. [ 1913 Webster ]

Apart and easy to be known they lie,
Amidst the heap, and obvious to the eye. Pope. [ 1913 Webster ]

Syn. -- Plain; clear; evident. See Manifest. [ 1913 Webster ]

-- Ob"vi*ous*ly, adv. -- Ob"vi*ous-ness, n. [ 1913 Webster ]

{ } a. [ L. obvolutus, p. p. of obvolvere to wrap round; ob (see Ob-) + volvere to roll. ] Overlapping; contorted; convolute; -- applied primarily, in botany, to two opposite leaves, each of which has one edge overlapping the nearest edge of the other, and secondarily to a circle of several leaves or petals which thus overlap. [ 1913 Webster ]

a. (Anat.) Situated under or inside a sheath or vaginal membrane; as, the subvaginal, or subdural, spaces about the optic nerve. [ 1913 Webster ]

n.; pl. -ties A subordinate variety, or a division of a variety. [ 1913 Webster ]

v. i. [ imp. & p. p. Subvened p. pr. & vb. n. Subvening. ] [ Pref. sub- + L. venire to come. See Subvention. ] To come under, as a support or stay; to happen. [ 1913 Webster ]

A future state must needs subvene to prevent the whole edifice from falling into ruin. Bp. Warburton. [ 1913 Webster ]

a. [ Pref. sub- + L. ventus wind. ] Produced by the wind. [ Obs. ] [ 1913 Webster ]

n. [ F., fr. LL. subventio, fr. L. subvenire to come up to one's assistance, to assist. See Souvenir, and cf. Subvene. ] 1. The act of coming under. “The subvention of a cloud.” Stackhouse. [ 1913 Webster ]

2. The act of relieving, as of a burden; support; aid; assistance; help. [ 1913 Webster ]

3. A government aid or bounty. [ 1913 Webster ]

v. t. To subventionize. [ 1913 Webster ]

v. t. To come to the aid of; to subsidize; to support. [ 1913 Webster ]

a. Helping; aiding; supporting. Urquhart. [ 1913 Webster ]

v. t. [ L. subversus, p. p. of subvertere. See Subvert. ] To subvert. [ Obs. ] Spenser. [ 1913 Webster ]

n. [ L. subversio: cf. F. subversion. See Subvert. ] The act of overturning, or the state of being overturned; entire overthrow; an overthrow from the foundation; utter ruin; destruction; as, the subversion of a government; the subversion of despotic power; the subversion of the constitution. [ 1913 Webster ]

The subversion [ by a storm ] of woods and timber . . . through my whole estate. Evelyn. [ 1913 Webster ]

Laws have been often abused to the oppression and subversion of that order they were intended to preserve. Rogers. [ 1913 Webster ]

a. Promoting destruction. [ 1913 Webster ]

a. [ Cf. F. subversif. ] Tending to subvert; having a tendency to overthrow and ruin. [ 1913 Webster ]

Lying is a vice subversive of the very ends and design of conversation. Rogers. [ 1913 Webster ]

v. t. [ imp. & p. p. Subverted; p. pr. & vb. n. Subverting. ] [ L. subvertere, subversum; sub under + vertere to turn: cf. F. subvertir. See Verse. ] 1. To overturn from the foundation; to overthrow; to ruin utterly. [ 1913 Webster ]

These are his substance, sinews, arms, and strength,
With which he yoketh your rebellious necks,
Razeth your cities, and subverts your towns. Shak. [ 1913 Webster ]

This would subvert the principles of all knowledge. Locke. [ 1913 Webster ]

2. To pervert, as the mind, and turn it from the truth; to corrupt; to confound. 2 Tim. iii. 14. [ 1913 Webster ]

Syn. -- To overturn; overthrow; destroy; invert; reverse; extinguish. [ 1913 Webster ]

v. i. To overthrow anything from the foundation; to be subversive. [ 1913 Webster ]

They have a power given to them like that of the evil principle, to subvert and destroy. [ 1913 Webster ]

a. (Her.) Reversed. [ R. ] [ 1913 Webster ]

a. (Anat.) Situated beneath, or on the ventral side of, the vertebral column; situated beneath, or inside of, the endoskeleton; hypaxial; hyposkeletal. [ 1913 Webster ]

n. One who, or that which, subverts; an overthrower. Sir T. More. [ 1913 Webster ]

a. That may be subverted. [ 1913 Webster ]

a. Imperfectly vitalized; having naturally but little vital power or energy. [ 1913 Webster ]

a. & n. Same as Subtonic. [ 1913 Webster ]