aculeationn.

Brit.

/əˌkjuːlɪˈeɪʃn/, U.S.

/əˌkjuliˈeɪʃ(ə)n/

Origin: Formed within English, by derivation. Etymons: aculeate adj., -ion suffix¹.

Etymology: < aculeate adj. + -ion suffix¹: see -ation suffix.

Biology. rare.

A spine or point; the state of being sharp or pointed; an instance of this.

ΘΚΠ

the world > life > biology > physical aspects or shapes > projection or protuberance > [noun] > pointed projection > spine

spine1430

spininess?1611

spinule1752

acicula1784

acicule1800

aculeation1806

spinula1826

acicle1852

spinescence1859

1806 E. Donovan Nat. Hist. Brit. Fishes IV. Pl. XCV Those tuberculated aculeations which appear so conspicuous on the surface of the Turbot.

1866 Jrnl. Royal Hort. Soc. 1 4 They differed..in the form of the leaves, the colouring of the stem and flowers, the degree of fertility, the size of the fruit, and the degree of aculeation.

1915 Proc. Entomol. Soc. Washington 17 92 The genera Tinea and Incurvaria may be best separated by the presence or absence of wing aculeation.

1983 Micropaleontology 29 338/2 Many..tubular processes tapering from broad circular bases to narrow necks before ending in..aculeation or wider rims.

This entry has been updated (OED Third Edition, December 2011; most recently modified version published online December 2021).

单词	aculeation
释义	aculeationn. Brit. /əˌkjuːlɪˈeɪʃn/, U.S. /əˌkjuliˈeɪʃ(ə)n/ Origin: Formed within English, by derivation. Etymons: aculeate adj., -ion suffix¹. Etymology: < aculeate adj. + -ion suffix¹: see -ation suffix. Biology. rare. A spine or point; the state of being sharp or pointed; an instance of this. ΘΚΠ the world > life > biology > physical aspects or shapes > projection or protuberance > [noun] > pointed projection > spine spine1430 spininess?1611 spinule1752 acicula1784 acicule1800 aculeation1806 spinula1826 acicle1852 spinescence1859 1806 E. Donovan Nat. Hist. Brit. Fishes IV. Pl. XCV Those tuberculated aculeations which appear so conspicuous on the surface of the Turbot. 1866 Jrnl. Royal Hort. Soc. 1 4 They differed..in the form of the leaves, the colouring of the stem and flowers, the degree of fertility, the size of the fruit, and the degree of aculeation. 1915 Proc. Entomol. Soc. Washington 17 92 The genera Tinea and Incurvaria may be best separated by the presence or absence of wing aculeation. 1983 Micropaleontology 29 338/2 Many..tubular processes tapering from broad circular bases to narrow necks before ending in..aculeation or wider rims. This entry has been updated (OED Third Edition, December 2011; most recently modified version published online December 2021). < n.1806
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