Illuminant meaning

Its earliest employment in industry was as an illuminant, and dates back to the early part of the 19th century.

Moreover the chief object of the Petroleum Acts passed in the United Kingdom has hitherto been to regulate storage, and it has always been possible to obtain oils either of higher or lower flash-point, when such are preferred, irrespective of the legal standard, in addition to which it may be asserted that in a properly constructed lamp used with reasonable care the ordinary oil of commerce is a safe illuminant.

Petroleum has been used to some extent both as a fuel and as an illuminant.

The general illuminant is electricity, and both electrical and gas services are owned by the municipality.

It is clear that acetylene, if it is to be used on a large scale as a domestic illuminant, must undergo such processes of purification as will render it harmless and innocuous to health and property, and the sooner it is recognized as absolutely essential to purify acetylene before consuming it the sooner will the gas acquire the popularity it deserves.