noun, feminine/de.sa.ty.ʁa.sjɔ̃/plural: désaturations
désaturation is feminine in French.
desaturation; desaturation, decrease in oxygen saturation; decongestion, reduction in congestion (of a network)
“la désaturation de l'isomère trans d'un acide gras” — the desaturation of the trans isomer of a fatty acid
dé- + saturation