octobromethyl

Prefix octo-; English brom( ine ), and ethyl.] Chem.: A compound in which eight atoms of bydrogen in the two atoms of ethyl have been replaced by two atoms of bromine. octobromethyl-oxide, s. Chem.: (C2HBr4) 20. A thickish liquid having an odor of perspiration, formed by heating ethyl i dene oxy chloride with bromine for ten hours. It fumes in the air, and is insoluble in water. oc-tō-děç-i-mal, adj . [Lat. octodecimus , from ectodecim eighteen: octo =eight, and decem =ten.] Crystal log.: Applied to a crystal whose prism has eight faces, and the two summits together, ten faces. oc-tō-děç'-I-mō, 8. & a. [Lat. neut. abl. sing. of ectodecimus.] [OCTODECIMAL.] A. As subst.: The size of one leaf of a sheet of paper folded so as to make eighteen leaves to the sheet; hence, a book printed on sheets folded into eighteen leaves. It is commonly abbreviated into 18mo. B. As adj .: Having or consisting of eighteen leaves to the sheet; of or equal to one leaf of a sheet of paper folded so as to make eighteen leaves. oc-to-den-tāte, a. [Pref. octo- , and Eng. den tate.] Having eight teeth. oc-tô-dăn, s. [Pref. oct-, and Gr. odous (gen it. odontos)=a tooth.] Zool.: The typical genus of the family Octodon tide, and the sub-family Octodontine, with three species, from Peru, Bolivia, and Chili. The best known is Octodon cumingii, a rat-like animal, rather smaller than the water-vole. Brownish yellow, penciled with black on back; yellowish beneath; feet white. čc-to-don-ti-dæ, s . pl . [Modern Lat. octodon , gen it. octodont (is); Lat. fem. pl. adj. suff. -ide .] 1. Zool .: A family of Hystricomorph a, with three sub-families, Ctenodactyline, Octodontine, and Echinomyine. 2. Palæont .: Four fo il genera; Ctenomys from the Pliocene, and Megamys from the Eocene of La Plata; and Paleomys and Archeomys from the Lower Miocene of France and Germany.