What does inodorous mean?
Inodorous means having no smell or odor. It is used when describing gases, chemicals, organisms, materials, and places whose lack of scent is relevant or noteworthy. The word is more formal and technical than odorless, which is the usual choice in everyday speech, while unscented often emphasizes the deliberate absence of added fragrance rather than the absence of any natural odor. Inodorous is a descriptive term and should not be taken to mean that something is safe, clean, or harmless; a substance can have no smell yet still be toxic, irritating, or dangerous. The word is especially common in chemistry, biology, medicine, environmental science, and product descriptions, where distinguishing an odorless substance from one with a noticeable or characteristic smell is important.
adjectiveHaving no smell or odor. The word is especially common in scientific, technical, and descriptive contexts.
- Having no smell or odor.
"The laboratory tested the substance to determine whether it was flammable, toxic, or inodorous."
"Carbon dioxide is colorless and inodorous under ordinary conditions."
"The museum described the new cleaning material as inodorous and safe to use in enclosed rooms."
Inodorous is the precise, scientific way to say that something produces no smell at all.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Where does inodorous come from?
The word was formed in English using the Latin prefix in-, meaning ‘not’ or ‘without,’ together with odor, a word borrowed from Latin and ultimately associated with the Latin root odor, meaning ‘smell.’ Related English words include odorous, olfactory, malodorous, and deodorant. Inodorous is therefore a transparent compound meaning literally ‘without odor.’
Related word forms
How inodorous is actually used
Inodorous is formal and technical in tone. In general conversation, odorless or scentless is usually more natural. It describes the absence of an odor and does not necessarily imply that a substance is safe, pure, or harmless.
Easily confused with inodorous
Inodorous is a more formal or technical adjective, while odorless is the more common everyday equivalent.