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callestrai

silicon

NounMasculine (gwrywaidd)dict/kaˈɬɛsdrai̯/

"callestrai" means "silicon" in Welsh (masculine noun). Pronounced /kaˈɬɛsdrai̯/. Mutation forms: Treiglad Meddal → gallestrai, Treiglad Trwynol → nghallestrai, Treiglad Llaes → challestrai.

Mutation forms

In Welsh, the first letter of "callestrai" changes depending on the grammatical context. These are the mutated forms:

MutationForm
Base formcallestrai
Treiglad Meddalgallestrai
Treiglad Trwynolnghallestrai
Treiglad Llaeschallestrai

Further reading

Welsh Mutations Explained — Soft, Nasal & Aspirate →Welsh Pronunciation — It's Actually Easier Than English →How to Learn Welsh as an Adult — A Step-by-Step Roadmap →Best Apps to Learn Welsh (2026) →Browse all Welsh vocabulary →

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