acuminatingadj.

Brit.

/əˈkjuːmᵻneɪtɪŋ/, U.S.

/əˈkjuməˌneɪdɪŋ/

Origin: Formed within English, by derivation. Etymons: acuminate v., -ing suffix².

Etymology: < acuminate v. + -ing suffix².

Now chiefly Zoology and Botany.

Tapering or narrowing to a point; (Mineralogy, of three or more planes) meeting so as to form a point by their intersection (now rare).

ΚΠ

1796 R. Kirwan Elements Mineral. (ed. 2) II. 239 Occurs massive..or crystalized in right angled quadrangular prisms acuminated, the acuminating planes resting on the edges of the planes of the prism.

1819 R. Bakewell Introd. Geol. i. 70 Plate IV. fig. 3. represents a cube acuminated at each angle by three small planes; these acuminating planes are set on the lateral planes.

1850 J. D. Dana U.S. Exploring Exped.: Geol. App. i. 694 The approximated and acuminating apices of the beaks.

1946 Jrnl. Paleontol. 20 128/2 Between the two swollen areas..lies a dorsally-acuminating lobe, bounded on either side by narrow sulci.

1997 Crustaceana 70 297 (caption) Epipodite slightly shorter than endite,..distally acuminating.

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

单词	acuminating
释义	acuminatingadj. Brit. /əˈkjuːmᵻneɪtɪŋ/, U.S. /əˈkjuməˌneɪdɪŋ/ Origin: Formed within English, by derivation. Etymons: acuminate v., -ing suffix². Etymology: < acuminate v. + -ing suffix². Now chiefly Zoology and Botany. Tapering or narrowing to a point; (Mineralogy, of three or more planes) meeting so as to form a point by their intersection (now rare). ΚΠ 1796 R. Kirwan Elements Mineral. (ed. 2) II. 239 Occurs massive..or crystalized in right angled quadrangular prisms acuminated, the acuminating planes resting on the edges of the planes of the prism. 1819 R. Bakewell Introd. Geol. i. 70 Plate IV. fig. 3. represents a cube acuminated at each angle by three small planes; these acuminating planes are set on the lateral planes. 1850 J. D. Dana U.S. Exploring Exped.: Geol. App. i. 694 The approximated and acuminating apices of the beaks. 1946 Jrnl. Paleontol. 20 128/2 Between the two swollen areas..lies a dorsally-acuminating lobe, bounded on either side by narrow sulci. 1997 Crustaceana 70 297 (caption) Epipodite slightly shorter than endite,..distally acuminating. This entry has been updated (OED Third Edition, December 2011; most recently modified version published online December 2021). < adj.1796
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