| 单词 | air root |
| 释义 | > as lemmasair root air root n. †(a) a motile projection (perhaps a cilium) on certain bryozoans (obsolete. rare); (b) [after German Luftwurzel (1808 or earlier, originally and chiefly in plural Luftwurzeln)] an aerial root, esp. one emerging from the stem of a climbing plant or epiphyte which typically serves as a point of attachment to a support rather than as an organ of nutrient absorption. ΘΚΠ the world > plants > by nutrition or respiration > [noun] > epiphyte > root air root1826 velamen1882 1826 Edinb. New Philos. Jrnl. 1 223 They are probably continuations of the inner substance, like those projecting from the Cellaria cereoides, upper roots (luftwurzeln, air-roots). 1853 Jrnl. Royal Geogr. Soc. 23 276 The long branching air roots of that tree (Rhizophora mangle) are entirely incrusted with calcareous matter. 1905 C. L. Goodrich First Bk. Farming (1909) xiv. 122 The trumpet creeper and English ivy climb by means of air roots. 1992 Amer. Jrnl. Bot. 79 524/2 These basal structures resembled the so-called air roots that are often reported to form along the underside of the large lateral branches of old cultivated Ginkgos. < as lemmas |
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