Transformed into or produced as a dental sound; having undergone dentalisation.
From dentalise + -d suffix forming the past tense and past participle. In British English, this describes sounds that have been articulated in the dental manner.
A dentalised 't' sound (where your tongue touches your front teeth instead of the ridge behind them) is actually how many British English speakers naturally pronounce 't'—it's not wrong, just a regional variant.
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