from The American Heritage® Dictionary of the English Language, 4th Edition
- n. A proteinaceous structure found within the chloroplast of certain algae and bryophytes. It is considered to be associated with starch deposition.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. any of several transparent structures found in the chloroplast of certain algae etc.; they are responsible for the fixation of carbon dioxide and the formation of starch
from the GNU version of the Collaborative International Dictionary of English
- n. A transparent body found in the chromatophores of certain Infusoria.
from The Century Dictionary and Cyclopedia
- Resembling in form the stone of a fruit; globular; nucleiform; of excrescent bodies, wart-like.
- n. A small colorless mass of proteid substance of a crystalline form, usually appearing hexagonal in optical section.
- n. One of the colorless plastids, or leucoplasts, found in the chromatophores of algæ and constituting centers for the formation of starch.
New Latin pȳrēna, fruit stone; see pyrene + -oid.(American Heritage® Dictionary of the English Language, Fourth Edition)
From pyrene + -oid. (Wiktionary)