optimism
— Noun
– English
～ a general disposition to expect the best in all things
optimist
— Noun
– English
～ a person disposed to take a favorable view of things
optimization
— Noun
– English
～ the act of rendering optimal; "the simultaneous optimization of growth and profitability"; "in an optimization problem we seek values of the variables that lead to an optimal value of the function that is to be optimized"; "to promote the optimization and diversification of agricultural products"
optimum
— Noun
– English
～ most favorable conditions or greatest degree or amount possible under given circumstances
option
— Noun
– English
～ the act of choosing or selecting; "your choice of colors was unfortunate"; "you can take your pick"
option
— Noun
– English
～ the right to buy or sell property at an agreed price; the right is purchased and if it is not exercised by a stated date the money is forfeited
option
— Noun
– English
～ one of a number of things from which only one can be chosen; "what option did I have?"; "there is no other alternative"; "my only choice is to refuse"
optometrist
— Noun
– English
～ a person skilled in testing for defects of vision in order to prescribe corrective glasses
optometry
— Noun
– English
～ the practice of an optometrist
opulence
— Noun
– English
～ wealth as evidenced by sumptuous living
Opuntia cholla
— Noun
– English
～ arborescent cacti having very spiny cylindrical stem segments; southwestern United States and Mexico
Opuntia lindheimeri
— Noun
– English
～ cactus having yellow flowers and purple fruits
Opuntia
— Noun
– English
～ large genus of cactuses native to America: prickly pears
Opuntiales
— Noun
– English
～ coextensive with the family Cactaceae: cactuses
opus
— Noun
– English
～ a musical work that has been created; "the composition is written in four movements"
OPV
— Noun
– English
～ an oral vaccine (containing live but weakened poliovirus) that is given to provide immunity to poliomyelitis
or
— Noun
– English
～ a state in northwestern United States on the Pacific
OR circuit
— Noun
– English
～ a gate circuit in a computer that fires when any of its inputs fire
OR gate
— Noun
– English
～ a gate circuit in a computer that fires when any of its inputs fire
OR
— Noun
– English
～ a room in a hospital equipped for the performance of surgical operations; "great care is taken to keep the operating rooms aseptic"