Holdfast
Holdfast Hold"fast`, n. 1. Something used to secure and hold in place something else, as a long flat-headed nail, a catch a hook, a clinch, a clamp, etc.; hence, a support. ``His holdfast was gone.'' --Bp. Montagu. [1913 Webster]

2. (Bot.) A conical or branching body, by which a seaweed is attached to its support, and differing from a root in that it is not specially absorbent of moisture. [1913 Webster]


The Collaborative International Dictionary of English. 2000.

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  • holdfast — index connection (fastening) Burton s Legal Thesaurus. William C. Burton. 2006 …   Law dictionary

  • holdfast — [hōld′fast΄] n. 1. the act of holding fast 2. any of various devices that hold something else in place; hook, nail, clamp, etc. 3. Bot. a part of certain rootless plants, as some algae, used to attach the plant to a surface 4. Zool. an organ of a …   English World dictionary

  • Holdfast — A holdfast is a root like structure that anchors aquatic sessile organisms, such as seaweed, other sessile algae, stalked crinoids, colonial cnidarians, and sponges, to the substrate. [cite book |author=D. N. Thomas |year=2002 |title=Seaweeds… …   Wikipedia

  • holdfast — hold·fast hōl(d) .fast n an organ by which a parasitic animal (as a tapeworm) attaches itself to its host * * * hold·fast (hōldґfast) a mass of material secreted by a cell or organism by which it is attached to a substrate or surface; called …   Medical dictionary

  • holdfast — see Brag is a good dog, but Holdfast is better …   Proverbs new dictionary

  • holdfast — noun Date: 1566 1. something to which something else may be firmly secured 2. a. a part by which a plant clings to a flat surface b. an organ by which a parasitic animal attaches itself to its host …   New Collegiate Dictionary

  • holdfast — 1) small hooks on the anal fin of male tetras (Hyphessobrycon, Characidae) thought to be used during mating to help grasp the female 2) structures, e.g. tendrils, on the egg cases of Chondrichthyes that anchor them to the sea bed …   Dictionary of ichthyology

  • holdfast — A structure produced by some bacteria and algae that attaches the cell to a solid object …   Dictionary of microbiology

  • holdfast — /hohld fast , fahst /, n. 1. something used to hold or secure a thing in place; a catch, hook, clamp, etc. 2. Bot., Mycol. any of several rootlike or suckerlike organs or parts serving for attachment. [1550 60; n. use of v. phrase hold fast] * *… …   Universalium

  • holdfast — noun a) Something to or by which an object can be securely fastened. b) A root like structure that anchors aquatic sessile organisms, such as seaweed, other sessile algae, stalked crinoids, benthic cnidarians, and sponges, to the substrate …   Wiktionary

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