(computing) A hardware-level interrupt that cannot be masked by software, such as a memory parity error.

(electronics, of a relay) Initialism of normally open.

(Roman Catholicism) Initialism of Novus Ordo.

A rounded mass or irregular shape; a little knot or lump.

Of the nature of, or relating to, a node. / (anatomy) Of or relating to the nodus.

Making a noise, especially a loud unpleasant sound / Full of noise. / Unpleasant-looking and causing unwanted attention

A knot, knob, protuberance or swelling.

The power of the noise in a signal.

Alternative spelling of nonfiction

(idiomatic, chiefly UK) not on your life, an emphatic form of no.