out-of-town
— Adjective
– English
～ happening in or being of another town or city; "an out-of-town tryout"; "an out-of-town school"
off the beaten track
— Adjective
– English
～ remote from populous or much-traveled regions; "they found a quiet out-of-the-way resort"
off the beaten track
— Adverb
– English
～ not along the usual route; "in order to experience something different, you need to go off the beaten path"
optic tract
— Noun
– English
～ the cranial nerve that serves the retina
organ transplant
— Noun
– English
～ an operation moving an organ from one organism (the donor) to another (the recipient); "he had a kidney transplant"; "the long-term results of cardiac transplantation are now excellent"; "a child had a multiple organ transplant two months ago"
os trapezium
— Noun
– English
～ the wrist bone on the thumb side of the hand that articulates with the 1st and 2nd metacarpals
os trapezoideum
— Noun
– English
～ the wrist bone between the trapezium and the capitate bones
out-tray
— Noun
– English
～ a wood or metal receptacle placed on your desk to hold your outgoing material
orthodontic treatment
— Noun
– English
～ dental treatment that corrects irregularities of the teeth or of the relation of the teeth to surrounding anatomy; treatment is usually by braces or mechanical aids; "orthodontic treatment of facial abnormalities"
oak tree
— Noun
– English
～ a deciduous tree of the genus Quercus; has acorns and lobed leaves; "great oaks grow from little acorns"
ordeal tree
— Noun
– English
～ evergreen shrub or tree of South Africa
orange tree
— Noun
– English
～ any citrus tree bearing oranges
orchid tree
— Noun
– English
～ small East Indian tree having orchid-like flowers and hard dark wood
orchard apple tree
— Noun
– English
～ native Eurasian tree widely cultivated in many varieties for its firm rounded edible fruits
olive-tree agaric
— Noun
– English
～ red luminescent mushroom of Europe
olive tree
— Noun
– English
～ a tree of the genus Olea cultivated for its fruit
order Tremellales
— Noun
– English
～ fungi varying from gelatinous to waxy or even horny in texture; most are saprophytic
on trial
— Adjective
– English
～ in the process of being tested or tried
oblique triangle
— Noun
– English
～ a triangle that contains no right angle
obtuse-angled triangle
— Noun
– English
～ a triangle that contains an obtuse interior angle