chwiliwr

chwilio (“to search”) +‎ -wr.

• IPA^(key): /ˈχwɪljʊr/

chwiliwr m (plural chwilwyr, not mutable)

1. investigator, searcher
2. examiner, inquirer
3. spy
4. (sciences, technology) probe

• chwiliedydd

• chwiliwr Hall (“Hall probe”)

• R. J. Thomas, G. A. Bevan, P. J. Donovan, A. Hawke et al., editors (1950–present), “chwiliwr”, in Geiriadur Prifysgol Cymru Online (in Welsh), University of Wales Centre for Advanced Welsh & Celtic Studies
• Delyth Prys, J.P.M. Jones, Owain Davies, Gruffudd Prys (2006) Y Termiadur: termau wedi'u safoni; standardised terminology‎^[1] (in Welsh), Cardiff: Awdurdod cymwysterau, cwricwlwm ac asesu Cymru (Qualifications curriculum & assessment authority for Wales), →ISBN, page 131