biordinal

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• biordinal — adjective Of the second order …   Wiktionary

• biordinal crochets — (ARTHROPODA: Insecta) Crochets of larvae arranged in a single series or row, but having two alternating lengths; see ordinal …   Dictionary of invertebrate zoology

• ordinal — adj. [L. ordin, methodical arrangement] 1. Belonging or pertaining to an order. 2. (ARTHROPODA: Insecta) Crochets of larvae, describing the length or arrangements at the tip; see uniordinal crochets, biordinal crochets, triordinal crochets,… …   Dictionary of invertebrate zoology