| 释义 |
retuse, a.|rɪˈtjuːs|
[ad. L. retūs-us, pa. pple. of retundĕre: see retund v. So F. rétus, rétuse.]
Terminating in a broad or rounded end with a depression in the centre. a. Bot. Of leaves, petals, etc.
1753Chambers Cycl. Suppl. s.v. Leaf, Retuse leaf,..a leaf whose extremity is terminated by an obtuse line. 1785Martyn Rousseau's Bot. xxv. (1794) 359 The leaves are retuse. Ibid., The lower leaflets retuse. 1847W. E. Steele Field Bot. 37 Pet. roundish, retuse, with an involute, broad, retuse point. 1870Hooker Stud. Flora 331 Buxus sempervirens... Leaves ½—1 in., obtuse or retuse.
b. Ent. Of parts of insects.
1824T. Say in Jrnl. Acad. Nat. Sci. Philad. III. ii. 298 Eyes elongated, retuse behind the antennæ. 1825― Explan. Terms Entom. 29 Retuse, ending in an obtuse sinus, or broad shallow notch; terminated by an obtuse hollow. 1826Kirby & Sp. Entomol. III. xxxvi. 711 At its base it is truncated in Sirex; retuse in most bees. |