exogenn.

/ˈɛksəʊdʒɪn/

Etymology: in French exogène (de Candolle 1813), modern Latin exōgena , exōgenus (imitating Latin indigena , indigenus ) adjective, growing on the outside, used in feminine as noun, < Greek ἔξω (see exo- prefix) + γενής born, produced.

Botany.

A plant whose stem grows by deposit on its outside; opposed to endogen n.The class of Exogens is identical with that of the Dicotyledons, one of the two main divisions of phanerogamous plants. (But see: quot. 1889, and cf. Balfour in Encycl. Brit. IV. 99).

ΚΠ

1830 J. Lindley Introd. Nat. Syst. Bot. 1 Exogenæ have a distinct deposition of pith, wood, and bark.]

1838 Penny Cycl. X. 128/1 Exogens have an embryo so robust as to be able to spring at once into existence.

1873 J. W. Dawson Story Earth & Man vi. 121 Those higher plants which start in life with two seed~leaves, and have stems with distinct bark, wood, and pith—the Exogens.

1889 Chambers's Cycl. Exogenous Plants, or Exogens, a term applied to dicotyledons by Lindley to express an erroneous view of the mode of stem-thickening from that of monocotyledons, and now wholly disused by botanists.

This entry has not yet been fully updated (first published 1894; most recently modified version published online June 2018).

单词	exogen
释义	exogenn. /ˈɛksəʊdʒɪn/ Etymology: in French exogène (de Candolle 1813), modern Latin exōgena , exōgenus (imitating Latin indigena , indigenus ) adjective, growing on the outside, used in feminine as noun, < Greek ἔξω (see exo- prefix) + γενής born, produced. Botany. A plant whose stem grows by deposit on its outside; opposed to endogen n.The class of Exogens is identical with that of the Dicotyledons, one of the two main divisions of phanerogamous plants. (But see: quot. 1889, and cf. Balfour in Encycl. Brit. IV. 99). ΚΠ 1830 J. Lindley Introd. Nat. Syst. Bot. 1 Exogenæ have a distinct deposition of pith, wood, and bark.] 1838 Penny Cycl. X. 128/1 Exogens have an embryo so robust as to be able to spring at once into existence. 1873 J. W. Dawson Story Earth & Man vi. 121 Those higher plants which start in life with two seed~leaves, and have stems with distinct bark, wood, and pith—the Exogens. 1889 Chambers's Cycl. Exogenous Plants, or Exogens, a term applied to dicotyledons by Lindley to express an erroneous view of the mode of stem-thickening from that of monocotyledons, and now wholly disused by botanists. This entry has not yet been fully updated (first published 1894; most recently modified version published online June 2018). < n.1838
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