Skip to main content
Etymology

pneumonia

/nuːˈmoʊniə/

noun

Origin

Ancient Greek

pneumōn — lung

Overview

Meaning Now

  • An inflammatory condition of the lung, typically characterized by inflammation of the parenchyma and the filling of the alveoli with fluid.

Literal older meaning

disease of the lungs

Language path

Ancient Greek → New Latin → English

Earliest form

pneumonia

Earliest period

17th century

Journey

The term relies on the Greek 'pneuma' (breath/wind). In antiquity, ancient physicians identified the lungs as the source of respiration, and the name for the organ was directly linked to the act of breathing. The clinical condition was later named by adding the standard medical suffix for disease.

Evolution

  1. Ancient Greek

    pneumōn

    “lung (literally 'breather')”

    Derived from pneuma 'breath'

  2. Ancient Greek

    pneumoniā

    “disease of the lungs”

    Addition of suffix -ia

  3. New Latin

    pneumonia

    “lung inflammation”

    Medical nomenclature adoption

Connections

Word parts

pneumon

root

lung

-ia

suffix

condition or disease

Related across languages

  • Ancient Greek

    pneumōn

    lung

Explore next

Related to pneumonia

Get the WordOrigin app

External references use DefinedTerm semantics.