半衰期

bànshuāiqī
(physics) half-life

CEDICT

physics

Entry Composition

1 半 bàn
  1. half
  2. semi-
  3. incomplete
  4. (after a number) and a half
2 衰 shuāi (bound form) to decay; to decline; to wane
=3 期 qī
  1. variant of 期 qī
  2. period
  3. cycle
=3 期 qī
  1. a period of time
  2. phase
  3. stage
  4. classifier for issues of a periodical, courses of study
  5. time
  6. term
  7. period
  8. to hope
  9. Taiwan pr. qí