• WordNet 3.6
    • n rhizoid any of various slender filaments that function as roots in mosses and ferns and fungi etc
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Webster's Revised Unabridged Dictionary
    • n Rhizoid (Bot) A rootlike appendage.
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Century Dictionary and Cyclopedia
    • rhizoid In botany and zoology, root-like; resembling a root.
    • n rhizoid In botany, a filamentous organ resembling a root, but of simple structure, found on compound thalli of all kinds, and on the stems of the Muscineæ.
    • n rhizoid Rhizoids are numerously produced, and their function is the attachment of the plant to the substratum. The older term was rhizina. See cut under prothallium.
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Chambers's Twentieth Century Dictionary
    • adj Rhizoid rī′zoid root-like
    • n Rhizoid a filamentous organ like a root developed on all kinds of thalli, and on moss-stems
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Webster's Revised Unabridged Dictionary
Gr. root + -oid,


In literature:

In the Marchantiales the chief supply is obtained from the soil by the rhizoids, and its loss in transpiration is regulated and controlled.
"Encyclopaedia Britannica, 11th Edition, Volume 4, Part 3" by Various