| 单词 | head shield |
| 释义 | > as lemmashead shield head shield n. [after German Kopfschild (1830 in the passage translated in quot. 1830)] Zoology a plate or cover on the head of an animal, as a part of the exoskeleton of an arthropod, or each of the scales on a reptile's head. ΚΠ 1830 tr. F. Eschscholtz in O. von Kotzebue New Voy. Discov. II. 331 The greater part have not the head divided from the head-shield [Ger. Kopfschild] by a line, and the breast is lengthened in front into a spine. 1893 H. N. Hutchinson Extinct Monsters 31 The eyes [of Pterygotus] are placed on the margin of the head-shield. 1907 L. Stejneger Herpetol. Japan 194 (caption) Head shields of scincid lizards. 1952 W. J. Miller Introd. Hist. Geol. (ed. 6) xviii. 239 The creature [sc. a trilobite] possessed a distinct head-shield with compound eyes. 2004 Nature 6 May 40/1 This specimen is preserved halfway through the act of moulting..squeezing out through an ecdysial opening at the front of the head shield of the old exoskeleton. < as lemmas |
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