(linguistics) A morpheme that has no phonetic form. It is represented as the empty set symbol ∅.

Pertaining to the Rh-null syndrome, or blood produced by the syndrome.

Ellipsis of Rh-null blood.; a blood type, in which red blood cells are completely lacking in all antigens of the Rh-blood-typing system (Rh factors), a system of 61 antigen types.

Alternative form of /dev/null

Synonym of aleph-null

(linear algebra) A zero matrix.

plural of null matrix

plural of null matrix

(science fiction, attributive) Relating to, producing, or designed for a condition of zero gravity.

(science fiction) Zero gravity adjective.