Langimage
English

atracheate

|a-tra-che-ate|

C2

/ˌeɪtrəˈkiːət/

without tracheae

Etymology
Etymology Information

'atracheate' originates from combining the prefix 'a-' (from Greek) meaning 'not' or 'without' and 'tracheate' (from 'trachea'), where 'trachea' ultimately comes from Greek 'trakhēía' meaning 'windpipe'.

Historical Evolution

'trachea' entered English via Latin/Medieval Latin from Greek 'trakhēía'. The adjective 'tracheate' (having tracheae) was formed from 'trachea' plus the adjectival suffix '-ate', and adding the privative prefix 'a-' produced 'atracheate' to mean 'without tracheae'.

Meaning Changes

Initially built to mean 'without a windpipe' in a general anatomical sense, it has come to be used specifically in biological and entomological contexts to mean 'lacking tracheae (the insect respiratory tubes)'.

Meanings by Part of Speech

Adjective 1

lacking tracheae (the tubular respiratory structures); without a tracheal system — used in biology/entomology to describe organisms that do not possess tracheae.

Some primitive arthropods are atracheate, relying on cutaneous respiration rather than a tracheal system.

Synonyms

without tracheaenon-tracheateatracheous

Antonyms

tracheatetracheatedhaving tracheae

Last updated: 2025/11/13 12:16