reniformadj.

Brit.

/ˈrɛnᵻfɔːm/, U.S.

/ˈrɛnəˌfɔrm/

Origin: Formed within English, by compounding; modelled on a Latin lexical item. Etymons: reni- comb. form, -form comb. form².

Etymology: < reni- comb. form + -form comb. form², after post-classical Latin reniformis (1680 in botanical use, designating kidney-shaped seeds). Compare scientific Latin reniformis (1753 in botany as the specific epithet reniforme; 1766 in zoology as the specific name reniformis), French réniforme (1778).

Chiefly Biology and Geology.

Kidney-shaped; having the form of a kidney or kidneys.

ΘΚΠ

the world > space > shape > curvature > types of curvature > [adjective] > kidney-shaped

nephroideous1682

reniform1745

kidney-shaped1758

kidney form1794

bean-shaped1836

nephroid1849

1745 J. Parsons Microsc. Theatre Seeds 240 Each Seed has a convex and a flat Side, and is, as some Botanists have termed it, in some measure reniform.

1798 G. Mitchell tr. D. L. G. Karsten Descr. Minerals in Leskean Mus. II. 439 A nearly reniform piece of compact Gypsum.

1819 G. Samouelle Entomologist's Compend. 81 Shell reniform, velvety, and green.

1829 T. Castle Introd. Systematical & Physiol. Bot. iii. 60 Kidney-shaped or reniform [leaf]..when the apex is broad and rounded and the base deeply hollowed out, as in asarabacca and common ground ivy.

1861 R. F. Burton City of Saints 570 Three-legged stools with reniform seats.

1880 T. H. Huxley Crayfish v. 237 The corneal substance of the eye is reniform.

1922 H. S. Salt Call of Wildflower iii. 31 The frog-bit, another flower of three white petals, whose small reniform foliage, floating on the brooks, gives it the appearance of a dwarf water-lily.

1990 C. Pellant Rocks, Minerals & Fossils 91/1 Prehnite. Chemistry: Ca₂Al₂Si₃O₁₀(OH)₂. System: Orthorhombic. Habit: usually reniform or fibrous.

2001 G. W. Rouse & F. Pleijel Polychaetes xiii. 73/2 Most elytra are reniform in shape and may be smooth or have papillae or tubercles of various shapes.

Compounds

reniform-cordate adj. Botany (of a leaf) kidney-shaped with a point at the tip; heart-shaped.

ΚΠ

1818 T. Nuttall Genera N. Amer. Plants I. 148 Smooth, leaves reniform-cordate, acute.

1920 N. L. Britton & C. F. Millspaugh Bahama Flora 439 The blades reniform-cordate to suborbicular.

1980 Bryologist 83 48 This subspecies is easily distinguished from the other western species of Scapania by..the reniform-cordate dorsal lobe.

This entry has been updated (OED Third Edition, December 2009; most recently modified version published online March 2022).

单词	reniform
释义	reniformadj. Brit. /ˈrɛnᵻfɔːm/, U.S. /ˈrɛnəˌfɔrm/ Origin: Formed within English, by compounding; modelled on a Latin lexical item. Etymons: reni- comb. form, -form comb. form². Etymology: < reni- comb. form + -form comb. form², after post-classical Latin reniformis (1680 in botanical use, designating kidney-shaped seeds). Compare scientific Latin reniformis (1753 in botany as the specific epithet reniforme; 1766 in zoology as the specific name reniformis), French réniforme (1778). Chiefly Biology and Geology. Kidney-shaped; having the form of a kidney or kidneys. ΘΚΠ the world > space > shape > curvature > types of curvature > [adjective] > kidney-shaped nephroideous1682 reniform1745 kidney-shaped1758 kidney form1794 bean-shaped1836 nephroid1849 1745 J. Parsons Microsc. Theatre Seeds 240 Each Seed has a convex and a flat Side, and is, as some Botanists have termed it, in some measure reniform. 1798 G. Mitchell tr. D. L. G. Karsten Descr. Minerals in Leskean Mus. II. 439 A nearly reniform piece of compact Gypsum. 1819 G. Samouelle Entomologist's Compend. 81 Shell reniform, velvety, and green. 1829 T. Castle Introd. Systematical & Physiol. Bot. iii. 60 Kidney-shaped or reniform [leaf]..when the apex is broad and rounded and the base deeply hollowed out, as in asarabacca and common ground ivy. 1861 R. F. Burton City of Saints 570 Three-legged stools with reniform seats. 1880 T. H. Huxley Crayfish v. 237 The corneal substance of the eye is reniform. 1922 H. S. Salt Call of Wildflower iii. 31 The frog-bit, another flower of three white petals, whose small reniform foliage, floating on the brooks, gives it the appearance of a dwarf water-lily. 1990 C. Pellant Rocks, Minerals & Fossils 91/1 Prehnite. Chemistry: Ca₂Al₂Si₃O₁₀(OH)₂. System: Orthorhombic. Habit: usually reniform or fibrous. 2001 G. W. Rouse & F. Pleijel Polychaetes xiii. 73/2 Most elytra are reniform in shape and may be smooth or have papillae or tubercles of various shapes. Compounds reniform-cordate adj. Botany (of a leaf) kidney-shaped with a point at the tip; heart-shaped. ΚΠ 1818 T. Nuttall Genera N. Amer. Plants I. 148 Smooth, leaves reniform-cordate, acute. 1920 N. L. Britton & C. F. Millspaugh Bahama Flora 439 The blades reniform-cordate to suborbicular. 1980 Bryologist 83 48 This subspecies is easily distinguished from the other western species of Scapania by..the reniform-cordate dorsal lobe. This entry has been updated (OED Third Edition, December 2009; most recently modified version published online March 2022). < adj.1745
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