Secondary articulation

Definition
If a sound is produced with two places of articulation, the secondary articulation is the point of articulation with the lesser degree of stricture.

Types of secondary articulation: labialisation (e.g. on /s/ in the Dutch word 'stroop'), velarisation, nasalisation, pharyngealisation, palatalisation, laryngealisation, glottalisation.

Links

 * Utrecht Lexicon of Linguistics