From noxius (“hurtful, injurious"), from noxa (“hurt, injury"), from nocere (“to hurt, injure"); see nocent.
Middle English noxiusfrom Latin fromnoxadamagenek-1 in Indo-European roots
American Heritage Dictionary of the English Language, 5th Edition
Noxious Sentence Examples
This change, which is called eosinophilia, indicates the production of a noxious substance in the blood.
Sulphuretted hydrogen is a noxious impurity, and its complete removal from the gas is usually imposed by parliament.
They knew poisonous plants, and could eliminate noxious properties.
Muller to include cases of mutual resemblance between two or more noxious species inhabiting the same area.
Poisonous or noxious animals usually have some special advertising attribute, sometimes the display of conspicuous coloration, as in the skunk; sometimes the emission of sound as in the rattlesnake; sometimes a combination of the two, as in the common porcupine and the large black scorpions of Africa and India.