1. Noun. (biology) A chloroplast that has never been exposed to light ¹
¹ Source: wiktionary.com
Medical Definition of Etioplast
1. Form of plastid present in plants grown in the dark. Lacks chlorophyll, but contains chlorophyll precursors and can develop into a functional chloroplast in the light.
This entry appears with permission from the Dictionary of Cell and Molecular Biology
(11 Mar 2008)
