atchweliad

Welsh

Etymology

From atchwelyd (“to regress”) +‎ -iad.

Noun

atchweliad m (plural atchweliadau)

1. return

   Synonyms: atchwel, dychweliad

2. (biology, genetics, psychology, statistics) regression

   Synonym: atchwel

References

• R. J. Thomas, G. A. Bevan, P. J. Donovan, A. Hawke et al., editors (1950–present), “atchweliad”, in Geiriadur Prifysgol Cymru Online (in Welsh), University of Wales Centre for Advanced Welsh & Celtic Studies