pentagonoidadj.
/pɛnˈtaɡənɔɪd/, U.S. /pɛnˈtæɡəˌnɔɪd/ Now rare.
Resembling a pentagon, somewhat pentagonal; (Physical Anthropology) denoting a skull having a roughly pentagonal cross-section when viewed from above.
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the world > relative properties > number > geometry > shape or figure > [adjective] > two-dimensional > pentagonal
cinquangled1557
pentagonal?a1560
pentagon1570
pentelater1571
quinquangle1590
Pentagonian1598
quinquangled1636
quinquangular1636
pentangular1661
quintangular1687
pentelateral1728
pentagonoid1882
the world > space > shape > angularity > specific angular shape > [adjective] > polygonal > pentagonal > approximately
pentagonoid1882
1882 Jrnl. Linn. Soc. 16 203 Marginal contour pentagonoid.
1895 Science 5 Apr. 381/1 The skulls are grouped as follows: norma verticalis... 2. Pentagonoid.
1937 R. A. Dart in I. Schapera Bantu-speaking Tribes S. Afr. (1946) i. 9 The skull is long and relatively narrow, of moderate height, and pentagonoid (coffin-shaped), when viewed from above.
1969 Current Anthropol. 10 486/2 A finely modeled pentagonoid calva without pronounced supraorbital arches.
This entry has been updated (OED Third Edition, September 2005; most recently modified version published online March 2022).
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adj.1882