Like a piece of singsong; simple and melodic, varying in pitch (of tone of voice etc.)

A piece of verse with a simple, song-like rhythm. / An informal gathering at which songs are sung; a singing session. / Bad singing or poetry.

To utter in a singsong voice. / (obsolete) To write poor poetry.

Alone; without assistance; by oneself.

(physics, chemistry) A metastable state of molecular oxygen that has a slightly higher energy than normal triplet oxygen, is diamagnetic rather than paramagnetic, and is more chemically reactive.

(trigonometry, rare) The trigonometric function defined as half the versed sine. Abbreviation: haversin

(trigonometry) The trigonometric function equal to half the coversed sine. Abbreviation: hacoversin

(trigonometry) The trigonometric function 1 − cos(x).

(trigonometry) The trigonometric function 1 − sin(x).

A kind of verse with a simple, song-like rhythm. / (colloquial, often childish) An informal gathering involving group singing.