Word Study
outdoor
CIDE DICTIONARY
outdoor, a. [For out of door.].
Being, or done, in the open air; being or done outside of certain buildings, as poorhouses, hospitals, etc.; as, outdoor exercise; outdoor relief; outdoor patients. [1913 Webster]
ROGET THESAURUS
outdoor
Exteriority
N exteriority, outside, exterior, surface, superficies, skin, superstratum, disk, disc, face, facet, extrados, excentricity, eccentricity, circumjacence, exterior, external, outer most, outward, outlying, outside, outdoor, round about, extramural, extralimitary, extramundane, superficial, skin-deep, frontal, discoid, extraregarding, excentric, eccentric, outstanding, extrinsic, ecdemic, exomorphic, externally, out, with out, over, outwards, ab extra, out of doors, extra muros, in the open air, sub Jove, sub dio, a la belle etoile, al fresco.For further exploring for "outdoor" in Webster Dictionary Online