O2 |
symbol of the chemical element oxygen. |
o |
the fifteenth letter of the English alphabet. |
oak |
a tree that belongs to the beech family and bears acorns. [2 definitions] |
oar |
a long pole that is wide and flat at one end. Oars are used to row or steer a boat. |
oasis |
an area in a desert where plants can grow. The plants are fed by water from a spring or well. |
oat |
(usually plural; used with a singular or plural verb) a grain plant that is grown in cool regions. [2 definitions] |
oath |
a serious promise. [2 definitions] |
oatmeal |
meal made by grinding or rolling oats. [2 definitions] |
obedient |
likely or willing to obey rules or orders. |
obese |
carrying an excessive amount of weight on one's body, to the degree that one's health can be affected. |
obey |
to follow or carry out the command, instruction, or wishes of. [3 definitions] |
obi |
a wide sash worn at the waist over a Japanese kimono. |
object |
anything that has shape or form and can be seen or touched. [7 definitions] |
objection |
a statement of not liking or not agreeing with something. [2 definitions] |
objectionable |
causing someone to object or disagree; offensive. |
objective |
a goal or purpose that a person works to achieve; aim. [2 definitions] |
obligate |
to make someone do something because of a law or moral principle. |
obligation |
something that someone should or should not do because of a law or moral principle. [2 definitions] |
oblige |
to make (someone) feel bound to do something or to act in a certain way. [3 definitions] |
obliging |
ready to help or do favors. |
oblique angle |
an angle that is not a right angle. |