acˈidness noun

acidˈophil noun

An acidophilic cell

acidophilic /-filˈik/ adjective

1. (of a cell) easily stained with acid dyes
2. (of micro-organisms or plants) flourishing in an acidic environment

acidōˈsis noun (medicine)

The presence of acids in the blood beyond normal limits

acidˈūlate transitive verb

To make slightly acid

acidˈūlous or acidˈūlent adjective

1. Slightly sour
2. Subacid
3. (of eg mineral waters) containing carbonic acid
4. Caustic or sharp (figurative)

acˈidy adjective

1. Resembling acid
2. Sharp, bitter

acid drop noun

A sweet flavoured with tartaric acid

acid dye noun

A dyestuff with acid properties

acid freak or acˈid-head noun (drug sl)

A person who takes LSD habitually

acid house noun

(sometimes with caps) a youth movement originating in the 1980s, involving large gatherings of people to dance under bright flashing lights to loud repetitive music featuring complex percussion patterns, and often associated with the use of certain drugs, esp Ecstasy

acid-houseˈ adjective

acid jazz noun

A form of jazz influenced by acid rock

acid rain noun

Rain or other forms of precipitation containing sulphur and nitrogen compounds and other pollutants released by the combustion of fossil fuels in industrial processes

acid reflux noun

The regurgitation of acid from the stomach into the oesophagus

acid rock noun

A type of rock music featuring bizarre electronic and instrumental effects supposedly influenced by, or suggestive of the effects of, hallucinogenic drugs

acid salt noun

A salt in which only part of the replaceable hydrogen is replaced by a metal

acid soil complex noun (botany)

A combination of aluminium and/or manganese toxicity with calcium deficiency which has a detrimental effect on calcicole plants

acid test noun

1. A test for gold by acid
2. A searching test (figurative)

put the acid on (informal; Aust and NZ)

To pressurize (a person)