Definition
A fine, soot-like black pigment made of nearly pure carbon, produced by burning oil, gas, or other carbon-rich fuels in a limited supply of air and collecting the resulting smoke. In aviation maintenance it is used as a colorant in some paints, dopes, and rubber compounds, and historically as a marking medium in inspection and fitting checks.
Plain English
A very fine black powder made from collected soot. It is used to color paints and rubber, and sometimes to mark surfaces during inspections.
Context Anchor
Seen in aircraft maintenance and finishing references, especially when a black coloring material or pigment is specified.
Derivation
From 'lamp' plus 'black,' because the soot was originally collected from the inside of oil-lamp chimneys. Knowing the origin makes the substance easier to picture: it is literally the black residue a smoky flame leaves behind.
Why Pilots Care
A pilot or mechanic may see this term in older maintenance, restoration, or finishing instructions. Knowing it means a carbon pigment prevents confusing it with a lighting part or an electrical item.
Intuition Check
Lampblack is not a lamp part. It is a fine black carbon powder used as a coloring material.
Example Sentence 1
The black pigment in the fabric dope was lampblack, which gave the covering its deep, even color.
Example Sentence 2
Lampblack was applied sparingly to the contacts to improve conductivity without attracting moisture.