The Collaborative International Dictionary
Mericarp
Mericarp \Mer"i*carp\, n. [Gr. me`ros a part + karpo`s fruit.] (Bot.) One carpel of an umbelliferous fruit. See Cremocarp.
Wiktionary
mericarp
n. (context botany English) An individual carpel of a schizocarp, having a single seed
WordNet
mericarp
n. a carpel with one seed; one of a pair split apart at maturity