In Botany is a kind of fruit that is dry, indehiscent and monospermo, whereas a super ovary with a single seed. The pericarp is not soldier ( it is independent ). If it comes from an inferior ovary is called cypsela.
achene - belonging to the type of frutoindehiscente, dry, with a single seed, as in Acorn-
achene: Jesus is of the dried fruit of a single female reproductive organs, or of a single carpel.