non-vascularadj.

Brit.

/nɒnˈvaskjᵿlə/, U.S.

/nɑnˈvæskjələr/

Origin: Formed within English, by derivation. Etymons: non- prefix, vascular adj.

Etymology: < non- prefix + vascular adj.

1. Medicine. That does not contain blood vessels (or, rarely: lymphatic vessels); that has not undergone vascularization; that does not have a blood supply. Also: that does not involve or belong to blood vessels; that is not caused by (disease of) blood vessels.

ΘΚΠ

the world > life > the body > vascular system > [adjective] > vessel > not vascular

non-vascular1837

unvascular1846

1837 Philos. Trans. (Royal Soc.) 127 342 A thin and transparent membrane, very like the vitellary membrane of the bird's egg, situated immediately outside the non-vascular and reflected layer of the umbilical vesicle.

1857 L. Holden Human Osteol. (ed. 2) 17 Bone so thin as to need no Haversian canals is called ‘nonvascular’ bone.

1879 St. George's Hosp. Rep. 9 526 Localised non-vascular ulceration of the cornea.

1913 Science 6 June 880/1 The tissue in which the lymph spaces and channels arise remains notably non-vascular up to the time the first lymphatics appear.

1974 V. B. Mountcastle et al. Med. Physiol. (ed. 13) II. xxxix. 969/2 In both cases the vascular and nonvascular components of the reaction depend on the same parts of the hypothalamus.

1999 Brit. Med. Jrnl. 9 Oct. 958 Non-vascular death was less common in the low anticoagulation group than in the aspirin group.

2. Botany. That lacks conducting tissue (xylem and phloem).

ΘΚΠ

the world > plants > part of plant > cell or aggregate tissue > [adjective]

vesicular1705

cellular1716

vascular1830

vasiform1835

vasculose1866

non-vascular1880

vesselled1895

1880 Bot. Gaz. 5 86 Dr. M. C. Cooke has entered upon his duties as Cryptogamist of the Herbarium, taking charge of all the non-vascular cryptogams.

1910 Amer. Naturalist 44 388 The number of non-vascular cryptogams in the ‘Species Plantarum’ is very much smaller than that of phænogams.

1946 Amer. Jrnl. Bot. 33 721/1 This paper takes up further consideration of relations between the nonvascular tissues of the blade and its venation.

1953 New Phytologist 52 206 The probable importance of non-genetical factors in morphogenesis is borne out by studies of the apices and somatic organization in non-vascular plants.

1999 Proc. National Acad. Sci. U.S.A. 96 12186 Coleoptile growth depends on the transcriptional up-regulation of ZMK1, an inwardly rectifying K⁺ channel expressed in the nonvascular tissue of this organ.

This entry has been updated (OED Third Edition, December 2003; most recently modified version published online March 2022).

单词	non-vascular
释义	non-vascularadj. Brit. /nɒnˈvaskjᵿlə/, U.S. /nɑnˈvæskjələr/ Origin: Formed within English, by derivation. Etymons: non- prefix, vascular adj. Etymology: < non- prefix + vascular adj. 1. Medicine. That does not contain blood vessels (or, rarely: lymphatic vessels); that has not undergone vascularization; that does not have a blood supply. Also: that does not involve or belong to blood vessels; that is not caused by (disease of) blood vessels. ΘΚΠ the world > life > the body > vascular system > [adjective] > vessel > not vascular non-vascular1837 unvascular1846 1837 Philos. Trans. (Royal Soc.) 127 342 A thin and transparent membrane, very like the vitellary membrane of the bird's egg, situated immediately outside the non-vascular and reflected layer of the umbilical vesicle. 1857 L. Holden Human Osteol. (ed. 2) 17 Bone so thin as to need no Haversian canals is called ‘nonvascular’ bone. 1879 St. George's Hosp. Rep. 9 526 Localised non-vascular ulceration of the cornea. 1913 Science 6 June 880/1 The tissue in which the lymph spaces and channels arise remains notably non-vascular up to the time the first lymphatics appear. 1974 V. B. Mountcastle et al. Med. Physiol. (ed. 13) II. xxxix. 969/2 In both cases the vascular and nonvascular components of the reaction depend on the same parts of the hypothalamus. 1999 Brit. Med. Jrnl. 9 Oct. 958 Non-vascular death was less common in the low anticoagulation group than in the aspirin group. 2. Botany. That lacks conducting tissue (xylem and phloem). ΘΚΠ the world > plants > part of plant > cell or aggregate tissue > [adjective] vesicular1705 cellular1716 vascular1830 vasiform1835 vasculose1866 non-vascular1880 vesselled1895 1880 Bot. Gaz. 5 86 Dr. M. C. Cooke has entered upon his duties as Cryptogamist of the Herbarium, taking charge of all the non-vascular cryptogams. 1910 Amer. Naturalist 44 388 The number of non-vascular cryptogams in the ‘Species Plantarum’ is very much smaller than that of phænogams. 1946 Amer. Jrnl. Bot. 33 721/1 This paper takes up further consideration of relations between the nonvascular tissues of the blade and its venation. 1953 New Phytologist 52 206 The probable importance of non-genetical factors in morphogenesis is borne out by studies of the apices and somatic organization in non-vascular plants. 1999 Proc. National Acad. Sci. U.S.A. 96 12186 Coleoptile growth depends on the transcriptional up-regulation of ZMK1, an inwardly rectifying K⁺ channel expressed in the nonvascular tissue of this organ. This entry has been updated (OED Third Edition, December 2003; most recently modified version published online March 2022). < adj.1837
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