後

settlement; winding or straightening up

Medicine

aftercare; after-treatment

posterior capsule (ophthalmology)

additional printing (e.g. of a non-CMYK ink) after the main print

halo effect

the young should be regarded with respect

staying an extra night (e.g. after attending an event)

molar

company name with the words "kabushiki kaisha" at the end

opisthobranchs

Martial arts

Aikido rear defence (defense)

back handspring (gymnastics)

backward compatible; downward compatible

least developed country; LDC

backward compatibility; downward compatibility

extremely important or once in a lifetime request

latter clause

Mathematics

consequent (of a ratio); latter term

back-right corner of rear stage (area behind main noh stage); stage attendant's spot

rear basket (e.g. on a bicycle)

least developed among developing nations

back to back

last in, first out; LIFO

Idiomatic expression

between the devil and the deep sea; out of the frying pan into the fire; a tiger at the back gate, a wolf at the front gate

back of a collar

Martial arts

grabbing the back of the opponent's collar (in judo)