holdfast organ
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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 — [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 — 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 — noun 1》 a staple or clamp securing an object. 2》 Biology a stalked organ by which a simple aquatic organism attaches itself to a substrate … English new terms dictionary
holdfast — n. 1 a firm grasp. 2 a staple or clamp securing an object to a wall etc. 3 the attachment organ of an alga etc … Useful english dictionary
acarid — /ak euh rid/, n. 1. an acarine, esp. a mite of the family Acaridae. adj. 2. of or pertaining to an acarid. [1875 80; ACAR(US) + ID2] * * * ▪ arachnid Introduction any member of the subgroup of the arthropod class Arachnida that includes the … Universalium
hypostome — The central unpaired holdfast organ of the tick capitulum; the h. is covered with recurved spines that enable it to serve as an anchoring device while the tick feeds. [hypo + G. stoma, mouth] * * * hy·po·stome hī pə .stōm n a rodlike organ that… … Medical dictionary
ambulatory rosette — (ARTHROPODA: Insecta) In Neuroptera, a prehensile holdfast organ located at the tip of the abdomen that aids in locomotion of larval snakeflies … Dictionary of invertebrate zoology
scolex — n. [Gr. skolex, worm] (PLATYHELMINTHES: Cestoda) The head or holdfast organ … Dictionary of invertebrate zoology
Cestoidea — The tapeworms, a class of platyhelminth flatworms characterized by lack of an alimentary canal and, in typical forms (subclass Cestoda), by a segmented body with a scolex or holdfast organ at one end; adult worms are vertebrate parasites, usually … Medical dictionary
