A colorless liquid.
A colorless face.
She stared out the window at the colorless winter landscape.
med., Longitudinally running comparatively colorless central (medullary) branches, which conduct food substances and support the (ass.
The primitive cell sends colorless tubelets (rhizoids, rh.) into the mud on which it grows.
The fundamental substance or stroma is colorless and homogeneous.
Those chromatophores which remain colorless, and serve simply as starch-f ormers in parts of the plant not exposed to the light, are called leucoplasts or amyloplasts.