tetraxon
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tetraxon — n. [Gr. tetra, four; axon, axis] (PORIFERA) A spicule of 4 equal and similar rays meeting at equal angles; tetractine; quadriradiate; tetraxonid adj … Dictionary of invertebrate zoology
tetraxon — te·trax·on … English syllables
calthrop — n. [ML. calcitrapa, a four pointed weapon used to obstruct enemy movements] (PORIFERA) A tetraxon spicule with four rays more or less equal … Dictionary of invertebrate zoology
clads — n. pl. [Gr. klados, branch] (PORIFERA) The three shorter rays of a tetraxon spicule, that may be forked or branched at their free ends … Dictionary of invertebrate zoology
cladome — n. [Gr. klados, branch] (PORIFERA) The three short rays or cladi of a tetraxon spicule … Dictionary of invertebrate zoology
cladus — n.; pl. cladi [Gr. klados, branch] (PORIFERA) Smaller branch of a tetraxon spicule; cladose adj … Dictionary of invertebrate zoology
crepis — n.; pl. crepides [Gr. krepis, base] 1. (ARTHROPODA: Insecta) In Scarabaeoidea larvae, a thinly sclerotized, anteriorly concave, median cross bar of the haptolachus, usually asymmetrical and indicated by a fine line when present; a transverse,… … Dictionary of invertebrate zoology
microcaltrop — n. [Gr. mikros, small; ML. calcitrapa, a four pointed weapon] (PORIFERA) A microsclere tetraxon spicule with four rays, one elongated and three short; a euaster with 4 persistent rays … Dictionary of invertebrate zoology
monaene — adj. [Gr. monos, one; triaina, trident] (PORIFERA) A modified tetraxon with only one clad … Dictionary of invertebrate zoology
quadriradiate — adj. [L. quadrus, fourfold; radius, ray] (PORIFERA) Having 4 rays; tetraxon, tetractine … Dictionary of invertebrate zoology
