| 释义 |
‖ mentum|ˈmɛntəm|
[L. mentum chin.]
1. Anat. The anterior and inferior margins of the mandible or lower jaw; the chin.
[1693tr. Blancard's Phys. Dict. (ed. 2), Mentum, the Chinn.] 1855Dunglison Med. Lex. 1866in Brande & Cox Dict. Sci., etc. In mod. Dicts.
2. Ent. A term variously applied to different parts of the labium; by recent entomologists commonly used for the median portion. Also attrib.
1826Kirby & Sp. Entomol. III. 355 Mentum, the lower part of the labium, where it is jointed; in other cases its base. Ibid. 356 note, Our [i.e. the authors'] Mentum may generally be known by its situation between the hinges and base of the Maxillæ. 1828Stark Elem. Nat. Hist. II. 281 Mentum large; maxillary palpi long. 1839Westwood Classif. Insects I. 1 Mentum-tooth triangular. Ibid. 4 Mentum-lobe entire. 1888Rolleston & Jackson Anim. Life 141 A palpiger borne on the external angle of the mentum.
3. Bot. ‘A projection in front of the flowers of some orchids, caused by the extension of the foot of the column’ (Treas. Bot. 1866). |