A position in which a person sits upright in a bed, possibly bending forward.

(colloquial, countable) Short for ampere. / (colloquial, countable) Short for amplifier. / (colloquial, countable) Short for ampoule. / (colloquial, countable) Short for amputee.

A person of Sumer. / A native of lower Babylonia, called Šumer in Akkadian.

(genetics) A gene involved in photosynthesis.