What does obcordate mean?
Obcordate describes something shaped like a heart turned upside down. The word occurs chiefly in botany, where it identifies leaves or other plant structures that are inversely cordate: the indentation lies at the apex rather than at the base, and the organ narrows toward its point of attachment. A leaf with this shape may resemble a small, flattened heart, which explains the term's direct relationship to ordinary heart imagery. Although the word can technically be used of any inversely heart-shaped object, established usage is overwhelmingly botanical. It is especially useful in plant identification, morphological descriptions, and taxonomic keys, where the direction of a leaf's heart-shaped notch can help distinguish one species from another. In everyday English, heart-shaped is normally preferred because obcordate is technical and usually unnecessary.
adjectiveIn botany, inversely heart-shaped; having the form of a cordate leaf reversed, with the indentation at the apex and the attachment point at the broad end.
- Botanical adjective meaning inversely cordate or shaped like a heart with the point and indentation reversed.
"The plant's small, fleshy leaves are obcordate, resembling tiny inverted hearts."
"Several tiny, obcordate leaves grew from the spreading groundcover."
"The botanist noted the flower's unusual obcordate petals in her field journal."
An obcordate leaf is literally an upside-down heart—and sometimes the resemblance is almost perfect.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Where does obcordate come from?
Obcordate comes from Latin obcordatus, formed from ob- meaning in reverse and cordatus meaning heart-shaped. English botanical usage developed from this Latin adjective. Its relatives include cordate, cordiform, and cardiac, all associated with the Latin word for heart.
Related word forms
How obcordate is actually used
This is a specialized botanical term, usually found in descriptions of leaves and other plant organs. Outside botanical or taxonomic writing, it is rarely used.
Easily confused with obcordate
A cordate organ is heart-shaped in the ordinary orientation, whereas an obcordate one has the heart shape reversed.