The Collaborative International Dictionary
Homoplast
Homoplast \Hom"o*plast\, n. (Biol.) One of the plastids composing the idorgan of Haeckel; -- also called homo["o]rgan.
Wiktionary
homoplast
n. (context biology English) One of the plastids composing the "idorgan" of (w: Ernst Haeckel).