rhombiferousadj.
/rɒmˈbɪf(ə)rəs/, U.S. /rɑmˈbɪf(ə)rəs/ΚΠ
1804 W. Nicholson tr. A.-F. de Fourcroy Gen. Syst. Chem. Knowl. II. 399 The names..express the relations of surfaces, or apparent figure, such as those of primitive rhombiferous, plagihedral and lenticular quartz.
1816 R. Jameson Treat. External Characters Minerals (ed. 2) 217 The Rhombiferous rock-crystal,..which is a six-sided prism, acuminated on both extremities with six planes, which are set on the lateral planes, and slightly truncated on the alternate angles; the truncating planes are rhombs.
1862 Amer. Jrnl. Pharmacy 34 6 This is true of the face termed rhombiferous by mineralogists.
2. Palaeontology. Of a thecal plate in a rhombiferan echinoderm: having diamond-shaped arrangements of pores. Also: (of an echinoderm) having such plates, rhombiferan. Cf. rhomb n. 1b.
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1848 E. Forbes in Mem. Geol. Surv. 2 ii. 488 The last of the centro-lateral series, is usually more or less elongated transversely, and is generally rhombiferous.
1894 Jrnl. Linn. Soc.: Zool. 24 8 It touches on the left rhombiferous plate.
1920 H. L. Hawkins Invertebr. Palaeontol. ii. ii. 135 Echinosphaera, an almost globular form with numerous ‘rhombiferous’ plates, is fairly abundant in the Ordovician.
1945 Amer. Midland Naturalist 34 709 Rhombiferous cystids of the family Cheirocrinidae.
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the world > animals > fish > class Osteichthyes or Teleostomi > subclass Actinopterygii > [adjective] > ganoid
ganoidean1839
ganoid1847
ganoidal1854
rhombiferous1855
1855 W. S. Dallas in Orr's Circle Sci.: Org. Nature III. 67 The Rhombiferous Ganoid Fishes.
1861 T. H. Huxley Ess. Devonian Fishes (Mem. Geol. Surv. Great Brit.) 25 Polypterus, however, is clearly related to the rhombiferous Crossopterygians.
1889 J. S. Newberry Paleozoic Fishes N. Amer. ii. 24 The scaled Ganoids included both the rhombiferous and cycliferous varieties.
This entry has been updated (OED Third Edition, June 2010; most recently modified version published online March 2022).
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adj.1804