Seseo

In Spanish dialectology, the terms , and are used to describe the opposition between dialects that distinguish the phonemes /θ/ and /s/ (distinción), and those that exhibit merger of the two sounds (neutralización) into either /s/ (seseo) or [s̄], a sibilant fricative similar to /θ/ (ceceo).

Dialects that distinguish the two sounds, and thus pronounce the words ('house') and ('hunt') differently, are described as having distinción, whereas the dialects that lack this distinction and pronounce the two words as homophones are described as having seseo if both words are pronounced with [s] or ceceo if both words are pronounced with [s̄].

Seseo is typical of the American, Canarian dialects , Philippine and some dialects of central Andalusia, whereas distinción is typical of most dialects in Spain, except in much of Andalusia and the Canary Islands. Ceceo is found in some dialects of Spain, in the southernmost part of Andalusia.

Distinction (Spanish: distinción) refers to the differentiated pronunciation of the two Spanish phonemes written ⟨s⟩ and ⟨z⟩ or ⟨c⟩ (only before ⟨e⟩ or ⟨i⟩, the so-called "soft" ⟨c⟩):

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