discoidal


Also found in: Dictionary, Thesaurus, Encyclopedia.

discoidal

(embryology) (of the blastoderm) having a disc-like shape where it forms a single layer in early development on top of the yolk, as in birds and reptiles.
References in periodicals archive ?
La variacion intraespecifica de la especie tampoco esta bien definida dentro de los trabajos de Lynch (1971) y Lynch y Duellman (1997), ya que identificamos que los procesos de los odontoforos vomerinos son prominentemente triangulares con 2 a 9 dientes (descritos como bajos y en numero de 2 a 4 por Lynch 1971 y Lynch y Duellman 1997), el pliegue discoidal esta bien definido (pobremente definido segun Lynch 1971 y Lynch y Duellman 1997) y los rangos de tamano corporal (LRC) provistos por Lynch y Duellman (1997) se incrementan en machos a 27.
Pronotum rectangular; claval and corial veins lacking dark to pink discoidal or irregular spots (Peru) V.
A fifth possible deposit exists in coeval strata of southern New Brunswick, in which more than a hundred discoidal to radial structures occur; these were informally described and hypothesized to represent composite molds of scyphozoan medusae (Pickerill 1982, 1990).
From the ratios of intermediate axis to long axis (b/a) and short axis to intermediate axis (c/b), discoidal, spheroidal, bladed and rod-shaped grain forms are obtained.
Fujibo-Ehime performs from the production of nonwovens, urethane impregnation and molding processing and finishes up to discoidal final products and sells them.
Lead in solders for the soldering to machined through-hole discoidal and planar array ceramic multilayer capacitors.
Also, lead found in solders used for machined thru-hole discoidal and planar array ceramic multilayer capacitors, and lead oxide in plasma display panels and surface conduction electron emitter displays used in structural elements (notably in the front and rear glass dielectric layer, the bus electrode, the black stripe, the address electrode, the barrier ribs, the seal frit, the frit ring and in print pastes) will qualify for exempt status.
These cichlids are unique in having a strongly laterally compressed discoidal shape, similar to the marine butterflyfishes of the genus Chaetodon.
They are assembled in the interstitial space from aggregation of free phospholipids, cholesterol, and apo A1 proteins as discoidal "nascent" HDL particles.