Odobenus rosmarus
— Noun
– English
～ a walrus of northern Atlantic and Arctic waters
orbital rotation
— Noun
– English
～ motion of an object in an orbit around a fixed point; "satellites in orbital rotation"
output routine
— Noun
– English
～ a routine that controls an output device
order Rubiales
— Noun
– English
～ an order of dicotyledonous plants of the subclass Asteridae; have opposite leaves and an inferior compound ovary
one-man rule
— Noun
– English
～ a form of government in which the ruler is an absolute dictator (not restricted by a constitution or laws or opposition etc.)
occupational safety and health act
— Noun
– English
～ a law passed by the United States Congress that created the Occupational Safety and Health Administration to prevent employees from being injured or contracting diseases in the course of their employment
order of Saint Benedict
— Noun
– English
～ a Roman Catholic monastic order founded in the 6th century; noted for liturgical worship and for scholarly activities
Ojos del Salado
— Noun
– English
～ a mountain in the Andes on the border between Argentina and Chile (22,572 feet high)
olympic salamander
— Noun
– English
～ small large-eyed semiaquatic salamander of the United States Northwest
order Salicales
— Noun
– English
～ coextensive with the family Salicaceae
onion salt
— Noun
– English
～ ground dried onion and salt
old salt
— Noun
– English
～ a man who serves as a sailor
Ostyak-Samoyed
— Noun
– English
～ the Uralic language spoken by the Ostyak-Samoyed
Ostyak-Samoyed
— Noun
– English
～ one of the people of mixed Ostyak and Samoyed origin in Siberia
open-face sandwich
— Noun
– English
～ sandwich without a covering slice of bread
open sandwich
— Noun
– English
～ sandwich without a covering slice of bread
order Santalales
— Noun
– English
～ order of plants distinguished by having a one-celled inferior ovary; many are parasitic or partly parasitic usually on roots