Значения термина ethereal oil на английском

The well-known condiments are salt, vinegar, pepper, ginger, nutmeg, cloves, and various substances containing ethereal oils and aromatics.

Ethereal oils occur in many families, in the bark, root, wood, leaf, flower, and fruit; particularly in myrtaceæ, laurineæ, cyperaceæ, crucifereæ, aurantiaceæ, labiatæ, and umbelliferæ.