We don't have synonyms for approximants yet — it may be a rare, specialized, newly coined, or misspelled word. The closest thesaurus entries we have are approximate, approximant and approximates.
(n) :
(phonetics) A consonant sound made by slightly narrowing the vocal tract, while still allowing a smooth flow of air. Liquids and glides are approximants.
(n) :
(mathematics) An approximation to the solution of a function, series, etc.
(n) :
(phonetics) A consonant sound made by slightly narrowing the vocal tract, while still allowing a smooth flow of air. Liquids and glides are approximants.
(n) :
(mathematics) An approximation to the solution of a function, series, etc.