rachialadj.

Brit.

/ˈreɪkɪəl/, U.S.

/ˈreɪkiəl/,

/ˈrækiəl/

Forms: 1800s– rachial, 1800s– rhachial.

Origin: Formed within English, by derivation. Etymons: rachis n., -al suffix¹.

Etymology: < rachis n. + -al suffix¹.

Zoology and Botany.

Characterized by a rachis; of or relating to a rachis.

ΘΚΠ

the world > life > the body > structural parts > bone or bones > spine > [adjective]

chined1577

vertebral1681

spinal1725

spinous1807

rachidian1823

rachidial1834

rachial1848

sterno-vertebral1861

juxta-spinal1876

thoracispinal1887

1848 Proc. Zool. Soc. 140 The Rachidian development..is the longest, and forms the Rachial type.

1896 Science 5 June 849/1 The accepted name of the central teeth is rhachidian, and not rhachial.

1921 Amer. Jrnl. Bot. 8 225 The upper surface of the rachis continues hairy..while the lower rachial surface and upper face of the pinnules remains smooth.

1949 Jrnl. Paleontol. 23 49/2 The overlapping portion of each rhachial ring amounts to about one-quarter its length.

2004 Plant Sci. 166 930/1 The rachial node primordia in the distal region of the leaf-blade produce compound pinnae.

This entry has been updated (OED Third Edition, June 2008; most recently modified version published online March 2022).

单词	rachial
释义	rachialadj. Brit. /ˈreɪkɪəl/, U.S. /ˈreɪkiəl/, /ˈrækiəl/ Forms: 1800s– rachial, 1800s– rhachial. Origin: Formed within English, by derivation. Etymons: rachis n., -al suffix¹. Etymology: < rachis n. + -al suffix¹. Zoology and Botany. Characterized by a rachis; of or relating to a rachis. ΘΚΠ the world > life > the body > structural parts > bone or bones > spine > [adjective] chined1577 vertebral1681 spinal1725 spinous1807 rachidian1823 rachidial1834 rachial1848 sterno-vertebral1861 juxta-spinal1876 thoracispinal1887 1848 Proc. Zool. Soc. 140 The Rachidian development..is the longest, and forms the Rachial type. 1896 Science 5 June 849/1 The accepted name of the central teeth is rhachidian, and not rhachial. 1921 Amer. Jrnl. Bot. 8 225 The upper surface of the rachis continues hairy..while the lower rachial surface and upper face of the pinnules remains smooth. 1949 Jrnl. Paleontol. 23 49/2 The overlapping portion of each rhachial ring amounts to about one-quarter its length. 2004 Plant Sci. 166 930/1 The rachial node primordia in the distal region of the leaf-blade produce compound pinnae. This entry has been updated (OED Third Edition, June 2008; most recently modified version published online March 2022). < adj.1848
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