a bluish translucent magnetic liquid obtained by compressing gaseous oxygen and then cooling it below its boiling point; used as an oxidizer in rocket propellants
have care of or look after; "She tends to the children"
have a tendency or disposition to do or be something; be inclined; "She tends to be nervous before her lectures"; "These dresses run small"; "He inclined to corpulence"
(of persons) freed from or not subject to an obligation or liability (as e.g. taxes) to which others or other things are subject; "a beauty somehow exempt from the aging process"; "exempt from jury duty"; "only the very poorest citizens should be exempt from income taxes"
grant relief or an exemption from a rule or requirement to; "She exempted me from the exam"