epicotyledonaryadj.

Brit.

/ˌɛpᵻkɒtᵻˈliːdn̩(ə)ri/, U.S.

/ˌɛpəˌkɑdəˈlidəˌnɛri/

Origin: Formed within English, by derivation; modelled on a German lexical item. Etymons: epi- prefix, cotyledonary adj.

Etymology: < epi- prefix + cotyledonary adj., after German epicotyl (1862 or earlier). Compare French épicotylédonaire (1879 or earlier). Compare earlier hypocotyledonary adj.

Botany.

Designating the part of the stem located above the cotyledons of a plant embryo or seedling; of, relating to, or located on this part of the stem. Cf. epicotyl n.

ΚΠ

1880 S. H. Vines tr. K. Prantl Elem. Text-bk. Bot. iv. 165 The internode next above the cotyledons is the epicotyledonary portion [Ger. epicotyles Glied].

1884 F. O. Bower & D. H. Scott tr. H. A. de Bary Compar. Anat. Phanerogams & Ferns 246 The bundles of the trace of the first epicotyledonary [Ger. epicotylen] leaves insert themselves on the cotyledonary bundles at or close below the cotyledonary node.

1908 Plant World 11 177 Pith canals do not occur in the epicotyledonary stem for the first few internodes, nor are they present in the hypocotyl.

1983 Bull. Torrey Bot. Club 110 287/2 The embryo in the ripe seed shows an incipient but sharply distinct differentiation into cotyledonary and epicotyledonary sectors.

2002 Amer. Jrnl. Bot. 89 387/2 The formation of a few epicotyledonary buds and some adventitious roots were observed.

This entry has been updated (OED Third Edition, March 2016; most recently modified version published online March 2022).

单词	epicotyledonary
释义	epicotyledonaryadj. Brit. /ˌɛpᵻkɒtᵻˈliːdn̩(ə)ri/, U.S. /ˌɛpəˌkɑdəˈlidəˌnɛri/ Origin: Formed within English, by derivation; modelled on a German lexical item. Etymons: epi- prefix, cotyledonary adj. Etymology: < epi- prefix + cotyledonary adj., after German epicotyl (1862 or earlier). Compare French épicotylédonaire (1879 or earlier). Compare earlier hypocotyledonary adj. Botany. Designating the part of the stem located above the cotyledons of a plant embryo or seedling; of, relating to, or located on this part of the stem. Cf. epicotyl n. ΚΠ 1880 S. H. Vines tr. K. Prantl Elem. Text-bk. Bot. iv. 165 The internode next above the cotyledons is the epicotyledonary portion [Ger. epicotyles Glied]. 1884 F. O. Bower & D. H. Scott tr. H. A. de Bary Compar. Anat. Phanerogams & Ferns 246 The bundles of the trace of the first epicotyledonary [Ger. epicotylen] leaves insert themselves on the cotyledonary bundles at or close below the cotyledonary node. 1908 Plant World 11 177 Pith canals do not occur in the epicotyledonary stem for the first few internodes, nor are they present in the hypocotyl. 1983 Bull. Torrey Bot. Club 110 287/2 The embryo in the ripe seed shows an incipient but sharply distinct differentiation into cotyledonary and epicotyledonary sectors. 2002 Amer. Jrnl. Bot. 89 387/2 The formation of a few epicotyledonary buds and some adventitious roots were observed. This entry has been updated (OED Third Edition, March 2016; most recently modified version published online March 2022). < adj.1880
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