Wavelet
/ˈweɪvlət/
Definition 1 of 2
Pro Tip 1/3Visual Imagery
Think of 'wavelet' as a visual element in a scene, to enhance descriptive writing. 
The morning breeze created countless sparkling wavelets on the surface of the ocean.
Pro Tip 2/3Not Just Water
'Wavelet' can describe movements similar to small waves in contexts other than water. 
The field of grass rippled with wavelets as the wind swept through.
Pro Tip 3/3Subtle Motion
Use 'wavelet' to imply a gentle, subtle, or delicate movement. 
Tiny wavelets in the tea were caused by her trembling hand.