opta Adjective, opta

1. eighth

Appox. usage (any sense): 120 per million words

optulea Adjective, optulea

1. eighth

Appox. usage (any sense): 27 per million words

optime Noun, f, optime

1. an eighth (one of eight equal parts of a whole)

Appox. usage (any sense): 0.889 per million words