pyramidoidaladj.

Brit.

/pᵻˌramᵻˈdɔɪdl/,

/ˌpɪrəmᵻˈdɔɪdl/, U.S.

/pəˌræməˈdɔɪd(ə)l/

Origin: Formed within English, by derivation. Etymons: pyramid n., -oidal suffix.

Etymology: < pyramid n. + -oidal suffix. In sense 2 after pyramidoid n.

1. Resembling a pyramid in shape. rare before late 20th cent.

ΘΚΠ

the world > relative properties > number > geometry > shape or figure > [adjective] > three-dimensional > conical > pyramidal

pyramidalc1450

pyramidate1572

pyramidical1599

pyramidy1627

pyramical1633

pyramidoidal1807

pyramoidal1883

1807 T. Young Course Lect. Nat. Philos. II. 20 All pyramidoidal solids are equal to one third of the circumscribing prismatic or cylindroidal solids of the same height.

1986 Jrnl. Near Eastern Stud. 45 90 Ancient Thamudic..pictorial representations of the camel..were in the form of stylized, pyramidoidal dunes.

1995 Exper. Fluids 18 319/1 Simultaneous measurement of the instantaneous velocity components in a three dimensional turbulent flow field by miniature pyramidoidal four-wire probes.

1996 A. C. Kendall & G. M. Harwood in H. G. Reading Sedimentary Environments (ed. 3) viii. 302 A bedded halite, up to 6 m thick, composed of pyramidoidal and columnar (chevron) halite crystals.

†2. Geometry. Of or relating to a pyramidoid. Obsolete. rare.Apparently only attested in dictionaries or glossaries.

ΚΠ

1890 Cent. Dict. Pyramidoidal, having the shape of a pyramidoid.

This entry has been updated (OED Third Edition, December 2007; most recently modified version published online March 2022).

单词	pyramidoidal
释义	pyramidoidaladj. Brit. /pᵻˌramᵻˈdɔɪdl/, /ˌpɪrəmᵻˈdɔɪdl/, U.S. /pəˌræməˈdɔɪd(ə)l/ Origin: Formed within English, by derivation. Etymons: pyramid n., -oidal suffix. Etymology: < pyramid n. + -oidal suffix. In sense 2 after pyramidoid n. 1. Resembling a pyramid in shape. rare before late 20th cent. ΘΚΠ the world > relative properties > number > geometry > shape or figure > [adjective] > three-dimensional > conical > pyramidal pyramidalc1450 pyramidate1572 pyramidical1599 pyramidy1627 pyramical1633 pyramidoidal1807 pyramoidal1883 1807 T. Young Course Lect. Nat. Philos. II. 20 All pyramidoidal solids are equal to one third of the circumscribing prismatic or cylindroidal solids of the same height. 1986 Jrnl. Near Eastern Stud. 45 90 Ancient Thamudic..pictorial representations of the camel..were in the form of stylized, pyramidoidal dunes. 1995 Exper. Fluids 18 319/1 Simultaneous measurement of the instantaneous velocity components in a three dimensional turbulent flow field by miniature pyramidoidal four-wire probes. 1996 A. C. Kendall & G. M. Harwood in H. G. Reading Sedimentary Environments (ed. 3) viii. 302 A bedded halite, up to 6 m thick, composed of pyramidoidal and columnar (chevron) halite crystals. †2. Geometry. Of or relating to a pyramidoid. Obsolete. rare.Apparently only attested in dictionaries or glossaries. ΚΠ 1890 Cent. Dict. Pyramidoidal, having the shape of a pyramidoid. This entry has been updated (OED Third Edition, December 2007; most recently modified version published online March 2022). < adj.1807
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