holdfast definition

  • noun:
    • Any of various products regularly fasten anything firmly.
    • Biology An organ or structure of attachment, especially the basal, rootlike formation through which particular seaweeds or other algae tend to be mounted on a substrate.
    • anything to otherwise where an object is firmly fastened.
    • A root-like construction that anchors aquatic sessile organisms, like seaweed, other sessile algae, stalked crinoids, benthic cnidarians, and sponges, into substrate.
    • Actinomycosis.
    • some thing familiar with secure and hold positioned something else, as a long flat-headed nail, a catch a hook, a clinch, a clamp, etc.; for this reason, a support.
    • A conical or branching human anatomy, in which a seaweed is attached with its support, and differing from a root in that it's not specifically absorbent of dampness.
    • what is used to secure and hold one thing set up; a catch; a hook; a clamp.
    • Support; hold.
    • The root-like organ of accessory produced by most of the algæ. Also haptere and rhizoid.
    • discipline that attaches to something or holds some thing positioned
  • others:
    • Holding fast; company; steady.
  • verb:
    • stick to solidly

Related Sources

  • Sentence for "holdfast"
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