Ungula see unguis

uniauriculate a. [L. unus, one; auricula, outer ear] Having a single ear-like process.

unibranchiate a. [L. unus, one; branchia, gill] Having one gill.

unicameral a. [L. unus, one; camera, chamber] Having one chamber.

unicapsular a. [L. unus, one; capsula, little box] Having only a single capsule.

unicarinate a. [L. unus, one; carina, keel] Having a single ridge or keel.

unicellular a. [L. unus, one; cellula, small chamber] Consisting of only one cell.

uniciliate a. [L. unus, one; cilium, eyelash] Having a single cilium or flagellum.

unicolonial a. [L. unus, one; colere, to dwell] (ARTHRO: Insecta) A population of social insects not recognizing nest boundaries; multicolonial.

unicolorate a. [L. unus, one; color, tint] Having one color throughout.

unicornous a. [L. unus, one; cornu, horn] Having only one horn.

unicuspid a. [L. unus, one; cuspis, point of spear] Having a single tapering point; one tooth.

unidentate a. [L. unus, one; dens, tooth] Having only one tooth.

unidiverticulate a. [L. unus, one; diverticulum, bypath] Hav ing one diverticulum.

uniflagellate a. [L. unus, one; flagellum, whip] With one fla-gellum; monociliated.

unifollicular a. [L. unus, one; folliculus, small bag] Having one follicle.

unigeminal a. [L. unus, one; geminus, twin-born] 1. With one pair. 2. (ECHINOD: Echinoidea) Pertaining to one row of pore pairs.

unilabiate a. [L. unus, one; labium, lip] Having one lip.

unilaminate colony (BRYO) A colony consisting of a single layer of zooids opening in approximately the same direction.

unilateral a. [L. unus, one; latus, side] On one side only.

unilocular a. [L. unus, one; loculus, small place] Having one cell or cavity.

uniloculate a. [L. unus, one; loculus, small place] (ANN) Having only one seminal chamber, such as the spermathecal diverticulum.

unimucronate a. [L. unus, one; mucro, sharp point] Having a single sharp tip.

uninominal a. [L. unus, one; nomen, name] Having only one name; monominal.

uninominal nomenclature The designation of a taxon above species rank by a scientific name consisting of a single word.

uniordinal crochets (ARTHRO: Insecta) In larvae, crochets arranged in a single row of uniform length or somewhat shorter towards the ends of the row. see ordinal.

uniparous a. [L. unus, one; parere, to beget] Producing one egg or young at a time.

uniplicate a. [L. unus, one; plicare, to fold] Having a single fold or line of folding.

unipolar a. [L. unus, one; polus, pole] Having one pole only.

unipolar cell A nerve cell with one fiber issuing from it.

uniradiate a. [L. unus, one; radius, wheel spoke] One-rayed.

uniramous a. [L. unus, one; ramus, branch] Having one branch only.

uniramous appendage (arthro) An unbranched appendage.

uniramous parapodium (ANN: Polychaeta) A parapodium that has only one part.

uniseptate a. [L. unus, one; septum, partition] Having one partition.

uniserial a. [L. unus, one; series, row] Arranged in one row or serial.

uniserial circle (ARTHRO: Insecta) Referring to crochets of larvae arranged in a single row or series with bases in a continuous line. see serial crochets.

uniserrate a. [L. unus, one; serra, saw] One row of serrations.

unisexual a. [L. unus, one; sexus, male or female sex] Individuals having separate sexes (dioecious, gonochoric) and producing only one kind (male or female) of gamates, therefore, being dimorphis.

unispire a. [L. unus, one; spira, coil] A single turn of a spiral.

unit character A trait behaving as a unit in heredity, inheritable independently of other traits.

univalent a. [L. unus, one; valens, strong] One member of a pair of homologous chromosomes.

univalve a. [L. unus, one; valva, leaf of a folding door] (MOLL: Bivalvia) Having a shell composed of one piece.

univariate analysis A biometric analysis of one character.

univoltine a. [L. unus, one; It. volta, time] Having one generation a year; monovoltine.

unjointed seta (ANN: Polychaeta) A seta without a joint; a simple seta.

unmyelinated a. [A.S. un, not; Gr. myelos, marrow] Nerves not covered with a myelin sheath.

unspecialized a. [A.S. un, not; L. species, a particular kind] Lacking modifications for any special function or purpose.

unsuitable host An immune or resistant animal or plant.

upcurved growth line (ARTHRO: Crustacea) In Conchostraca, an upwardly bent growth line covering a tear in the shell margin at the site of an injury.

upper latus (ARTHRO: Crustacea) In Lepadomorph barnacles, the plate in the upper whorl between the scutum and ter-gum or carina.

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