(sports) The standard period of play, contrasted with any additional periods such as injury time, extra time or penalty shootout.

Any force acting normal, to a surface, or perpendicular to the tangent plane.

(statistics) Any of a family of continuous probability distributions such that the probability density function is the Gaussian function

The study of the microscopic structure of living tissue (histology) that is in good health (as opposed to pathological histology which studies that of diseased tissue).

(medicine) A solution of 0.9% w/v of NaCl, about 300 mOsm/L.

plural of normal force

(algebra, field theory) For a given Galois field 𝔽_(qᵐ) and a suitable element β, a basis that has the form {β, β^q, β^(q2), ... , β^(qm-1)}.

plural of normal basis

(geology) A type of fault in which the footwall moves up relative to the hanging wall.

plural of normal fault