Said of orchids which have pseudobulbs consisting of a single internode.
<plant biology> Having the adult parts of the plant (especially the leaves) distinctly different in form from the juvenile parts. ... (09 Oct 1997) ... 
(het″әr-o-blas´tik) originating in a different kind of tissue.
Type: Term Pronunciation: het′er-ō-blas′tik Definitions: 1. Developing from more than a single type of tissue.