英语词汇“protoxylem”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典

protoxylem n.

Brit.

/ˌprəʊtə(ʊ)ˈzʌɪləm/

U.S.

/ˌproʊdoʊˈzaɪləm/

/ˌproʊdəˈzaɪləm/

[after German Protoxylem (E. Russow 1873, in Mém. Acad. Impér. Sci. St.-Pétersbourg (Sér. 7) 19 3)] Botany the first-formed elements of the primary xylem in a plant organ, maturing before elongation of the surrounding plant tissue is complete and therefore often subsequently distorted or destroyed by this process; cf. metaxylem n.

ΘΚΠ

the world > plants > part of plant > cell or aggregate tissue > [noun] > tissue > xylem or phloem

liber1753

phloem1872

xylem1875

protophloem1884

protoxylem1887

internal phloem1891

metaxylem1894

hadrome1898

leptome1898

metaphloem1900

included phloem1910

1887 W. Hillhouse tr. E. Strasburger Handbk. Pract. Bot. viii. 86 We have found..in the wood portion (the xylem) of the fibro~vasal bundle, the primary wood, the Protoxylem, composed of primary wood-parenchyma and of vessels.

1945 W. O. Howarth & L. G. G. Warne Lowson's Textbk. Bot. (ed. 9) iv. 89 The first-formed xylem is the protoxylem, and the first elements of the protoxylem to take shape are annular or spiral vessels.

2004 Jrnl. Cell Sci. 117 1179/2 Protoxylem is the water-conducting tissue of young and elongating plant organs.

单词	protoxylem
释义	> as lemmas protoxylem protoxylem n. Brit. /ˌprəʊtə(ʊ)ˈzʌɪləm/ , U.S. /ˌproʊdoʊˈzaɪləm/ , /ˌproʊdəˈzaɪləm/ [after German Protoxylem (E. Russow 1873, in Mém. Acad. Impér. Sci. St.-Pétersbourg (Sér. 7) 19 3)] Botany the first-formed elements of the primary xylem in a plant organ, maturing before elongation of the surrounding plant tissue is complete and therefore often subsequently distorted or destroyed by this process; cf. metaxylem n. ΘΚΠ the world > plants > part of plant > cell or aggregate tissue > [noun] > tissue > xylem or phloem liber1753 phloem1872 xylem1875 protophloem1884 protoxylem1887 internal phloem1891 metaxylem1894 hadrome1898 leptome1898 metaphloem1900 included phloem1910 1887 W. Hillhouse tr. E. Strasburger Handbk. Pract. Bot. viii. 86 We have found..in the wood portion (the xylem) of the fibro~vasal bundle, the primary wood, the Protoxylem, composed of primary wood-parenchyma and of vessels. 1945 W. O. Howarth & L. G. G. Warne Lowson's Textbk. Bot. (ed. 9) iv. 89 The first-formed xylem is the protoxylem, and the first elements of the protoxylem to take shape are annular or spiral vessels. 2004 Jrnl. Cell Sci. 117 1179/2 Protoxylem is the water-conducting tissue of young and elongating plant organs. extracted from proto-comb. form < as lemmas
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> as lemmas