peiriadach
Irish
Etymology
From peiriad (“period”) + -ach.
Adjective
peiriadach (genitive singular masculine peiriadaigh, genitive singular feminine peiriadaí, plural peiriadacha, comparative peiriadaí)
- (chemistry, physics) periodic
- Antonym: aipeiriadach
Declension
Declension of peiriadach
| Singular | Plural (m/f) | |||
|---|---|---|---|---|
| Positive | Masculine | Feminine | (strong noun) | (weak noun) |
| Nominative | peiriadach | pheiriadach | peiriadacha; pheiriadacha² | |
| Vocative | pheiriadaigh | peiriadacha | ||
| Genitive | peiriadaí | peiriadacha | peiriadach | |
| Dative | peiriadach; pheiriadach¹ |
pheiriadach; pheiriadaigh (archaic) |
peiriadacha; pheiriadacha² | |
| Comparative | níos peiriadaí | |||
| Superlative | is peiriadaí | |||
¹ When the preceding noun is lenited and governed by the definite article.
² When the preceding noun ends in a slender consonant.
Derived terms
- tábla peiriadach (“periodic table”)
Mutation
| Irish mutation | ||
|---|---|---|
| Radical | Lenition | Eclipsis |
| peiriadach | pheiriadach | bpeiriadach |
| Note: Some of these forms may be hypothetical. Not every possible mutated form of every word actually occurs. | ||
Further reading
- "peiriadach" in Foclóir Gaeilge-Béarla, An Gúm, 1977, by Niall Ó Dónaill.
- Entries containing “peiriadach” in English-Irish Dictionary, An Gúm, 1959, by Tomás de Bhaldraithe.
- Entries containing “peiriadach” in New English-Irish Dictionary by Foras na Gaeilge.
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