early-type spiral

early-type spiral

[′ər·lē ¦tīp ′spī·rəl]
(astronomy)
A spiral galaxy with a large nuclear bulge and tightly wound arms.
References in periodicals archive ?
Most have an early-type spiral system, called a lenticular galaxy, as the central showpiece.
Abstract: Lenicular (S0) galaxies form a morphological transition class between ellipticals and early-type spirals in the Hubble (1936) classification system.