nautiloid
[ nawt-l-oid ]
/ ˈnɔt lˌɔɪd /
noun
a mollusk of the subclass Nautiloidea, including nautiluses and many fossil species that were abundant in the Ordovician and Silurian periods.
adjective
noting or pertaining to a nautiloid.
Words nearby nautiloid
nautch,
nautes,
nautical,
nautical day,
nautical mile,
nautiloid,
nautilus,
nautophone,
nav,
nav.,
nav. arch.
Example sentences from the Web for nautiloid
The remarkable group of the Trilobites had precedence in order of time of the Nautiloid shell-fishes.
The Chain of Life in Geological Time |Sir J. William DawsonHe referred also to the nautiloid shell of the larva falling to one side.
Cephalic shield pointed behind; shell internal, chiefly membranous, with calcified nucleus, nautiloid; parapodia forming fins.
British Dictionary definitions for nautiloid
nautiloid
/ (ˈnɔːtɪˌlɔɪd) /
noun
any mollusc of the Nautiloidea, a group of cephalopods that includes the pearly nautilus and many extinct forms
adjective
of, relating to, or belonging to the Nautiloidea
Scientific definitions for nautiloid
nautiloid
[ nôt′l-oid′ ]
Any of various cephalopod mollusks of the subclass Nautiloidea, having a straight or coiled shell divided internally into a series of chambers of increasing size connected by a central tube. The nautiloids include the modern nautiluses as well as numerous extinct species dating back as far as the Cambrian Period.