ȯ(r)ˈthäsərəs noun
Usage: capitalized
Etymology: New Latin, from orth- + -ceras
: an ill-defined genus of extinct nautiloid cephalopod mollusks having a long tapering shell that is nearly or quite straight, almost smooth, and many-chambered
ȯ(r)ˈthäsərəs noun
Usage: capitalized
Etymology: New Latin, from orth- + -ceras
: an ill-defined genus of extinct nautiloid cephalopod mollusks having a long tapering shell that is nearly or quite straight, almost smooth, and many-chambered
Webster's New International English Dictionary. Новый международный словарь английского языка Webster. 2012