Definition of indusium in English:
noun (plural indusia-ZHēə-zēə)chiefly Botany
A thin membranous covering, especially a shield covering a sorus on a fern frond.
- The leaf margins themselves are often reflexed to form false indusia that protect the sori.
- The latter is covered by the indusium griseum, a thin sheet of rudimentary cortex containing (on each side) the delicate medial and lateral longitudinal striae.
- The upper surface of the intermediate portion of the corpus callosum is covered by a thin veil of gray substance - the indusium griseum.
Early 18th century: from Latin, literally 'tunic', from induere 'put on, don'.
Definition of indusium in:
- British & World English dictionary
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