What type of cluster occurs when two or more consonant sounds appear together without a vowel in between?

The term that accurately describes two or more consonant sounds appearing together without a vowel interposed between them is "consonant cluster." These clusters can be found at the beginning or end of words and are essential components of phonology, impacting how words are pronounced and recognized. For example, in the word "strong," the initial consonant cluster consists of the sounds /s/ and /t/.

Vowel clusters, on the other hand, refer specifically to two or more vowel sounds occurring together, which does not apply here. Phoneme clusters are not a recognized linguistic term for describing consonant combinations specifically, and syllable clusters refer to patterns within entire syllables rather than the specific arrangement of consonants. Thus, the correct choice reflects the precise linguistic definition relevant to consonant sound combinations.