mantissa /man-tisˈə/

1. The fractional part of a logarithm (mathematics)
2. The significant digits of a floating-point number (computing)

• onychophorans
• onymous
• on your bike
• on your mark
• on your marks
• onyx
• onyxes
• onyx marble
• onyx marbles
• o/o
• oo
• oo'
• oo-
• oobit
• oobits
• oocyst
• oocysts
• oocyte
• oocytes
• oodles
• oodlins
• oof
• oofier
• oofiest
• oofs