the state of needing something that is absent or unavailable; "there is a serious lack of insight into the problem"; "water is the critical deficiency in desert regions"; "for want of a nail the shoe was lost"
freedom of choice; "liberty of opinion"; "liberty of worship"; "liberty--perfect liberty--to think or feel or do just as one pleases"; "at liberty to choose whatever occupation one wishes"
personal freedom from servitude or confinement or oppression
(chemistry) a process in which one substance permeates another; a fluid permeates or is dissolved by a liquid or solid
(physics) the process in which incident radiated energy is retained without reflection or transmission on passing through a medium; "the absorption of photons by atoms or molecules"