| 单词 | aerial root |
| 释义 | > as lemmasaerial root aerial root n. a plant root that grows in the air; esp. a root of a climber that clings to its support, or a root of a mangrove that grows upwards to allow respiration; cf. air root n. at air n.1 Compounds 2. ΚΠ 1832 J. Lindley Introd. Bot. 77 In Pandanus the spongioles of the aerial roots consist of numerous very thin exfoliations of the epidermis. 1874 R. Brown Man. Bot. ii. ii.136 The Lianas , or woody climbers..send out these aerial roots freely; many of which reach the ground, when they enlarge in diameter and form new trunk-like supports. a1933 J. A. Thomson Biol. for Everyman (1934) II. 843 Occasionally there is a stray ivy climbing on a crab tree in the hedge, climbing by its adhesive aërial roots which grow out of the stem. 2005 C. Tudge Secret Life Trees xi. 264 Most [mangrove trees] have at least some aerial roots, directly exposed to the air. Their surface is perforated with ‘lenticels,’ apertures that enable air to enter. < as lemmas |
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