extinen.

Brit.

/ˈɛkstɪn/,

/ˈɛkstʌɪn/,

/ˈɛkstiːn/, U.S.

/ˈɛkstaɪn/,

/ˈɛkstᵻn/

Etymology: < Latin ext- (in extimus most outward, < ex- ) + -ine suffix¹.

Botany.

The outer membrane of the pollen grain. Also exine n.

ΚΠ

1839 J. Lindley Introd. Bot. (ed. 3) 188 But it [sc. the shell of the pollen-grain] has been ascertained to to consist..of two or even three membranes, of which the outer (extine) is thicker than the inner (intine).

1882 S. H. Vines tr. J. von Sachs Text-bk. Bot. (ed. 2) 505 The contents [of pollen grains] enclosed by an extine and intine, divide into two cells.

This entry has not yet been fully updated (first published 1894; most recently modified version published online March 2022).

单词	extine
释义	extinen. Brit. /ˈɛkstɪn/, /ˈɛkstʌɪn/, /ˈɛkstiːn/, U.S. /ˈɛkstaɪn/, /ˈɛkstᵻn/ Etymology: < Latin ext- (in extimus most outward, < ex- ) + -ine suffix¹. Botany. The outer membrane of the pollen grain. Also exine n. ΚΠ 1839 J. Lindley Introd. Bot. (ed. 3) 188 But it [sc. the shell of the pollen-grain] has been ascertained to to consist..of two or even three membranes, of which the outer (extine) is thicker than the inner (intine). 1882 S. H. Vines tr. J. von Sachs Text-bk. Bot. (ed. 2) 505 The contents [of pollen grains] enclosed by an extine and intine, divide into two cells. This entry has not yet been fully updated (first published 1894; most recently modified version published online March 2022). < n.1839
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