achroma

achroma

[akrō′mə]
Etymology: Gk, a, without, chroma, color
lack of color.

achroma

A Greek root for lacking pigmentation or colour—e.g., achromatic lens.

achroma

(ā″krō′mă) [ a- + chrom-]
An absence of color or normal pigmentation as in leukoderma, albinism, and vitiligo.