first in order of time or development; primitive

belonging to the first group or order in successive divisions, combinations, or ramifications

primary nerves

denoting or relating to the usu nine or ten strong feathers on the joint of a bird's wing furthest from the body: compare secondary¹

denoting an industry that produces raw materials: compare secondary¹, tertiary¹

denoting the inducing current or its circuit in an induction coil or transformer

in chemistry, denoting a carbon atom that is bonded to one other carbon atom only

derived directly from the plant-forming tissue at a growing point on a plant

primary tissue

primary growth

denoting the strongest degree of stress in speech: compare secondary¹

in geology, denoting formations of the Palaeozoic and earlier periods

something that is first in rank, importance, or value; a fundamental

in the USA, an election in which qualified voters nominate or express a preference for a particular candidate or group of candidates for political office, choose party officials, or select delegates for a party convention

= primary school

= primary colour

any of the usu nine or ten strong feathers on the joint of a bird's wing furthest from the body: compare secondary²