What does "perfluorobutane" mean?

A colourless gaseous fluorocarbon, C₄F₁₀, used in fire extinguishers and in ultrasound imaging

Perfluorobutane

noun

noun ·Rare ·Advanced level

Noun

1
A colourless gaseous fluorocarbon, C₄F₁₀, used in fire extinguishers and in ultrasound imaging uncountable