| 释义 |
incisor Anat. and Zool.|ɪnˈsaɪsə(r), -ɔː(r), -ˈsaɪz-|
[a. med. and mod.L. incīsor lit. ‘cutter’, agent-n. from L. incīdĕre to cut, incide v.1]
A tooth adapted for cutting; any one of the front teeth in either jaw, having a sharp edge and a single fang, situated between the canine teeth on each side, as in man and other mammals; hence extended to teeth of any character having this situation.
1672Sir T. Browne Lett. Friend §12 In the burnt fragments of urns which I have enquired into, altho I seem to find few Incisors or Shearers. 1713Derham Phys.-Theol. iv. xi. note (R.), Suppose the order of the teeth..inverted, the grinders set in the room of the incisors. 1831Youatt Horse v. (1847) 107 The horse has six incisors or cutting teeth in the front of each jaw.
b. attrib. (a) Adapted for cutting, as incisor forceps; incisor tooth (= prec. sense). (b) Connected with the incisor teeth, as incisor artery, incisor canal, incisor foramen, incisor fossa, incisor nerve.
1837M. Donovan Dom. Econ. II. 289 The human teeth are chiefly incisor or cutting teeth, and molar or grinding teeth. 1841–71T. R. Jones Anim. Kingd. (ed. 4) 215 Like the incisor teeth of rodent quadrupeds, they are therefore continually growing, and are thus always preserved sharp and fit for use. 1879St. George's Hosp. Rep. IX. 635 Aided by strong cutting and incisor forceps, a partially decayed upper canine tooth was forcibly extracted. 1886Syd. Soc. Lex., Incisor artery, a branch of the inferior dental artery. It supplies the canine and incisor teeth... Incisor nerve, a branch of the inferior dental nerve. It supplies the canine and incisor teeth. |