waktu paruh

Indonesian

Etymology

Compound of waktu (“time”) +‎ paruh (“half”), a calque of Dutch halveringstijd (“half-life”, literally “halving time”).

Pronunciation

• (Standard Indonesian) IPA^(key): /ˌwaktu ˈparuh/ [ˌwak̚.t̪u ˈpa.rʊh]
• Syllabification: wak‧tu pa‧ruh

Noun

waktu paruh

1. (physics) half-life (the time required for half the nuclei in a sample of an isotope to undergo radioactive decay)
2. (chemistry) half-life (the time required for concentration to fall to half)
3. (medicine) half-life (time for a substance to lose half of its activity)

Synonyms

• separuh hayat (in Standard Malay)

See also

• paruh waktu (“part-time”)

Further reading

• “waktu paruh” in Kamus Besar Bahasa Indonesia, Jakarta: Agency for Language Development and Cultivation – Ministry of Education, Culture, Research, and Technology of the Republic of Indonesia, 2016.