(1) Free from chromatic aberration. An achromatic lens is able to transmit light without separating it into colors. (2) Achromatic color is distinguished by differences in its lightness. It has no hue [..]

1766, from Latinized form of Greek akhromatos "colorless," from a-, privative prefix (see a- (3)), + khromat-, comb. form of khroma "color" (see chroma) + -ic.

Light perceived as having no hue, this includes the shades of neutral gray from white to black.…

A subject, scene, or Image without color.

adj. Colorless,

The non-colours of black, white and grey.

1. lacking color- colorless agents of black, white and gray. 2. retaining the ability to bend light while keeping it in tact in regards to it's fundamental wavelength components.

capable of transmitting light without decomposing it into its constituent colors.

Literally means without color. Black, white and grays are achromatic.

(adj) having no hue

lens system that has been corrected for chromatic aberration.

Lacking color, black, gray or white.

<microscopy> Literally, colour-free. A lens or prism is said to be achromatic when corrected for two colours. The remaining colour seen in an image formed by such a lens is said to be secondary chromatic aberration. A truly achromatic lens would transmit light without decomposing it spectrally and there would be no colour fringing in the imag [..]

The non-colors of black, white and gray.

Without color or hue.

Black, white and greys. Artwork that is executed without color. Also called monochromatic.

The non-colors... black, white and gray.

The non-colors... black, white and gray.

The non-colors of black, white and gray.

The non-colors... black, white and gray.

(optics) Free from color; transmitting light without color-related distortion. Containing components such as achromatic lenses and prisms, designed to prevent color-related distortion. (biology) [..]

1). Without color 2). Tints or Shades ranging from Black to White. 3) Grays.