| 单词 | head cell |
| 释义 | > as lemmashead cell head cell n. [after German Kopfzelle (1861 or earlier, with reference to plant hairs)] Botany a rounded terminal cell at the end of a stalked structure (as a trichome, or the manubrium in the antheridium of a stonewort); cf. capitulum n. 3c and sense 15g. ΚΠ 1884 F. O. Bower & D. H. Scott tr. H. A. de Bary Compar. Anat. Phanerogams & Ferns i. 63 Elongated hairs bearing on a usually three-celled stalk a large oval or pear-shaped head-cell [Ger. Kopfzelle], not glandular. 1919 J. N. Martin Bot. for Agric. Students xiii. 334 The terminal cell [of a manubrium], known as head cell, divides into a number of cells and each of these produces a pair of long filaments. 1968 Bot. Gaz. 129 96/2 They [sc. glandular trichomes] consist of a single row of cells, differentiated into a rounded or elongate head cell and one or more stalk cells. 2000 Plant Physiol. 124 655/2 Small, capitate glandular trichomes, with a single secretory head cell. < as lemmas |
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