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[Latin cor, cord-, heart; see kerd- in Indo-European roots + -form.]


(Biology) heart-shaped
[C19: from Latin cor heart]


(ˈkɔr dəˌfɔrm)

[1820–30; < Latin cord-, s. of cor heart + -i- + -form]
ThesaurusAntonymsRelated WordsSynonymsLegend:
Adj.1.cordiform - (of a leaf) shaped like a heart
unsubdivided, simple - (botany) of leaf shapes; of leaves having no divisions or subdivisions
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References in periodicals archive ?
[v] "In the Codice Atlantico we find sketches of a globe being unfolded that is not far from Waldseemuller's pseudo-Ptolemaic, cordiform projection (1507)." Veltman (1986).
4 cm diam., assimetric; sepals green, deltoid to ovate or ovate to oblong, abaxial surface glabrous, 5-11 X 3-6 mm; petals yellow with ribs orange, two external, obovate to orbicular, 11-19 X 9-12 mm, two internal, obelliptic, 15-18 X 8-11 mm, cuculus cordiform to orbicular, 14-19 X 14.5-16 mm; stamens yellow, 5-13 mm long; staminoids, 2-5 mm long; ovary yellow, strigose, 8-12 mm long; style light yellow, 8-12 mm long.
The cordiform morphology of the shell of NHMUK R8699 is shared with Thalassemys hugii, and differs from that of the other taxa.
Tongue cordiform, broadly ovate, slightly emarginate posteriorly.Slight web between base of fingers; fingers slender, slightly flat; tips round, III greater than I greater than II greater than IV; inner palmer tubercles distinct, longer than wide at the base of I finger, outer longer than wide at the base of IV finger.
Known as cordiform (heart-shaped leaves), examples can be seen in ivies, hostas, lime trees, birch and even many individual flower petals, from roses to buttercups.
These same upper ferns also release narrow stalks;decorated with cordiform leaves, these stalks reach further up therelief towards yet other monsters.
Stigma ventral, ovate-triangular to cordiform, flat, covered by a viscous secretion, its lower margin somewhat bilobed and prominent, 2.3-2.5 mm long, 1.5-1.8 mm wide; rostellum triangular, rounded, after removal of the pollinarium the rostellum remnant laminar, triangular-ovate, three-toothed, middle tooth narrowly triangular, lateral teeth about one-third the length of the middle tooth.