ˈæsɪd n. & adj. --n. 1 Chem. a
any of a
class of substances
that liberate hydrogen ions in
water, are usu.
sour and corrosive,
turn litmus red, and
have a pH of
less than 7. b any compound or
atom donating protons. 2 (in
general use) any sour
substance. 3 sl.
the drug LSD. --adj. 1 sharp-tasting, sour. 2
biting,
sharp (an acid wit). 3 Chem. having the
essential properties of an acid. 4 Geol. containing
much silica. 5 (of a colour)
intense,
bright. øacid
drop Brit. a kind of
sweet with a sharp
taste. acid-head sl. a
user of the drug LSD. acid
house a kind of synthesized
music with a
simple repetitive beat,
often associated with the
taking of hallucinogenic drugs. acid
radical one formed by the
removal of hydrogen ions
from an acid. acid
rain acid formed in the
atmosphere esp. from
industrial waste gases and falling with rain. acid test 1 a
severe or
conclusive test. 2 a test in
which acid is used to test
for gold etc. put the acid on
Austral. sl.
seek to
extract a loan or
favour etc. from. øøacidic adj. acidimeter n. acidimetry n. acidly adv. acidness n. [F acide or L acidus f. acere be sour]
