What does catarrhal mean?
Catarrhal is an adjective describing conditions associated with catarrh — the excessive secretion of mucus from inflamed mucous membranes, especially those lining the nose, throat, and airways. A catarrhal cold involves congestion, a runny or blocked nose, and often a productive cough; a catarrhal fever or catarrhal inflammation is one in which such mucus build-up is a defining feature. The word derives ultimately from the Greek katarrhein, 'to flow down', capturing the sense of discharge moving downward through the respiratory passages. Largely confined to medical and clinical contexts today, it appears most often in descriptions of infectious diseases, notably in the phrase 'catarrhal stage' (as in whooping cough) and in older terms like 'catarrhal fever'. For general readers, it conveys precisely what 'congested' or 'phlegmy' suggest, but with clinical authority.
adjectiveRelating to or characterized by catarrh, an excessive build-up of mucus in the nose, throat, or airways, typically during a cold or other inflammation of the mucous membranes.
- Relating to catarrh: involving excessive mucus production in the nose, throat, or airways, as in a cold or upper-respiratory infection.
"The patient presented with a catarrhal infection marked by congestion and a persistent cough."
"The child was kept home from school with a catarrhal cold."
"In its catarrhal stage, whooping cough resembles an ordinary head cold, which makes early diagnosis difficult."
From Greek for 'to flow down', catarrhal literally means 'a flowing down' — the ancient physicians' vivid image for the mucus that pours into your throat when you have a cold.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Etymology of catarrhal
Catarrhal comes from catarrh, which entered English via Latin catarra from Greek katarrhous or katarrein, meaning 'to flow down' (kata-, 'down', plus rhein, 'to flow'). Ancient Greek physicians used it to describe the downward flow of bodily humors thought to cause head colds, and the adjective formed on this noun came to denote anything marked by such mucus discharge. It shares its root rhein ('to flow') with 'rheum' and 'rheumatic', and with 'diarrhea', all built on the same Greek verb for flowing.
Related word forms
How catarrhal is actually used
A technical term used chiefly in medical and clinical writing rather than everyday speech. It carries a formal, clinical register; lay speakers would more likely say 'chesty' or 'congested'.
Easily confused with catarrhal
Cathedral is a large church building; catarrhal describes mucus-heavy inflammation of the respiratory tract — the words merely sound vaguely similar.