A tropical climbing plant (genus Cardiospermum) known for its small round seed pods with a distinctive heart-shaped mark on each seed.
From 'heart' plus 'seed,' named for the obvious heart-shaped marking on the seeds. The genus name 'Cardiospermum' combines Greek 'cardia' (heart) and 'sperma' (seed), showing how botanists confirmed the common-sense observation.
Cardiospermum is sometimes called 'balloon vine' because of its balloon-like seed pods, but the name 'heartseed' is more poetic—and more botanically accurate, since every seed has that perfect little heart mark that looks almost artificial in its perfection.
Complete word intelligence in one call. Free tier — 50 lookups/day.