A state of readiness without immediate involvement; remaining in preparation for (a sudden or unforeseen event or situation). / (electronics) sleep mode

(proscribed, nonstandard, operations) To wait briefly, as for additional communication by radio or telephone; alternative spelling of stand by

(slang) An inconclusive standoff, ending in mutual retreat.

Aloof; reserved; unsociable and unfriendly.

(physics, chemistry) An electrode with a standard electrode potential of zero; used as a standard against which other electrodes are measured.

an electrode potential measured under standard conditions; a temperature or 298K, 1 atmosphere pressure and at 1 mole of the activity of redox participants of the half-reaction.

(physics, chemistry) The international, standard conditions used to aid reproducibility; a temperature of 0 °C (273.15 K) and a pressure of 1 atmosphere (101.325 kPa). Abbreviated as STP.

Somebody who is forced to stand up, for example, on a crowded bus.

(UK slang, derogatory) Utterly basic, ordinary, or standard; unremarkable, unexceptional, etc.

(economics) A monetary system where the value of circulating money is linked to the value of gold. / (figuratively) A test or measure of comparison that is considered ultimate or ideal.