retard : Idioms & Phrases
mentally retarded
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noun people collectively who are mentally retarded
developmentally challenged; retarded.
- he started a school for the retarded
WordNet
Retard , ∨ Age , of the tide
- the interval between the transit of the moon at which a tide originates and the appearance of the tide itself. It is found, in general, that any particular tide is not principally due to the moon's transit immediatelly proceeding, but to a transit which has occured some time before, and which is said to correspond to it. The retard of the tide is thus distinguished from the lunitidal interval. See under
Retardation . rHam. Nav. Encyc.
Webster 1913
retarded depression
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noun a state of clinical depression in which the individual is lethargic and slow to initiate action
WordNet
retarding force
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noun the phenomenon of resistance to motion through a fluid
drag.
