Sinuation is a 9 letter English word.
You can make 290 anagrams from letters in sinuation (aiinnostu).
First recorded in 1645-55, sinuation is from the Late Latin word sinuātiōn- (stem of sinuātiō). See sinuate, -ion
The sinuation of the outer lip and impression of the whorl behind the peristome, give a slightly ringent aspect to the mouth.