%tyro%

n. [ Butyric + -one. ] (Chem.) A liquid ketone obtained by heating calcium butyrate. [ 1913 Webster ]

a. Butyraceous. [ 1913 Webster ]

n. (Chem., Med.) a chemical substance consisting of tyrosine with two hydrogen atoms on the benzene ring replaced by iodine atoms. The isomer 3, 5-diiodotyrosine is an inhibitor of thyroid function. [ WordNet 1.5 ]

n. [ L. lac, lactis, milk + E. butyrometer. ] An instrument for determining the amount of butter fat contained in a given sample of milk. [ 1913 Webster ]

n. [ LL. martyrologium: cf. F. martyrologe. ] A martyrology. [ Obs. ] Bp. Hall. [ 1913 Webster ]

{ } a. Pertaining to martyrology or martyrs; registering, or registered in, a catalogue of martyrs. [ 1913 Webster ]

n. [ Cf. F. martyrologiste. ] A writer of martyrology; an historian of martyrs. T. Warton. [ 1913 Webster ]

n.; pl. -gies [ Martyr + -logy. ] A history or account of martyrs; a register of martyrs. Bp. Stillingfleet. [ 1913 Webster ]

a. [ Gr. &unr_; bran + -oid. ] Having the form of, or resembling, bran. Smart. [ 1913 Webster ]

n. (Bot.) An American orchidaceous plant (Aplectrum hyemale) which flowers in early summer. Its slender naked rootstock produces each year a solid corm, filled with exceedingly glutinous matter, which sends up later a single large oval evergreen plaited leaf. Called also Adam-and-Eve. [ 1913 Webster ]

n. [ Styrax + L. oleum oil. ] (Chem.) See Styrolene. [ 1913 Webster ]

n. (Chem.) An unsaturated hydrocarbon, C8H8, obtained by the distillation of storax, by the decomposition of cinnamic acid, and by the condensation of acetylene, as a fragrant, aromatic, mobile liquid; -- called also phenyl ethylene, vinyl benzene, styrol, styrene, and cinnamene. [ 1913 Webster ]

n. (Chem.) A white crystalline substance having a sweet taste and a hyacinthlike odor, obtained by the decomposition of styracin; -- properly called cinnamic alcohol or styryl alcohol. [ 1913 Webster ]

n.; pl. Tyros [ L. tiro a newlylevied soldier, a beginner. ] A beginner in learning; one who is in the rudiments of any branch of study; a person imperfectly acquainted with a subject; a novice. [ Written also tiro. ] [ 1913 Webster ]

The management of tyros of eighteen
Is difficult. Cowper. [ 1913 Webster ]

n. [ L. tirocinium first service or trial, fr. tiro. See Tyro. ] The state of being a tyro, or beginner; apprenticeship. [ Obs. ] Blount. [ 1913 Webster ]

n. [ From Tyrol, where it occurs. ] (Min.) A translucent mineral of a green color and pearly or vitreous luster. It is a hydrous arseniate of copper. [ 1913 Webster ]

n. The state of being a tyro, or beginner. [ Written also tironism. ] [ 1913 Webster ]

n. [ Gr. &unr_; cheese. ] (Physiol. Chem.) A white crystalline nitrogenous substance present in small amount in the pancreas and spleen, and formed in large quantity from the decomposition of proteid matter by various means, -- as by pancreatic digestion, by putrefaction as of cheese, by the action of boiling acids, etc. Chemically, it consists of oxyphenol and amidopropionic acid, and by decomposition yields oxybenzoic acid, or some other benzol derivative. [ Written also tyrosine. ] [ 1913 Webster ]

n. [ NL., fr. Gr. &unr_; cheese + &unr_;. See Toxic. ] (Physiol. Chem.) A ptomaine discovered by Vaughan in putrid cheese and other dairy products, and producing symptoms similar to cholera infantum. Chemically, it appears to be related to, or identical with, diazobenzol. [ 1913 Webster ]