# aeronautics

/ˌɛɹəˈnɔtɪks/ (US) · /ˌeəɹəʊnˈɔːtɪks/ (UK) · CEFR C1 · Noun

Source: https://englishreference.com/word/aeronautics
Updated: 2026-05-08

## Definition

the science and study of how to design, build, and fly aircraft.

For teachers: the science or art involved with the study, design, and manufacture of airflight-capable machines, and the techniques of operating aircraft and rocketry within the atmosphere.

## Examples

- She is studying aeronautics to become an aircraft designer.
- Advances in aeronautics have led to the development of much quieter and more fuel-efficient passenger jets.
- The university's department of aeronautics focuses on the fluid dynamics of supersonic flight and the structural integrity of lightweight composite materials used in modern airframes.

## Pitfalls

- Not "Aeronautics are a difficult subject." but "Aeronautics is a difficult subject." — Like 'physics' or 'mathematics', this word ends in 's' but is uncountable and requires a singular verb.

## Usage notes

- Singular in construction; despite the 's' ending, it takes a singular verb.

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From EnglishReference.com — a pedagogical English dictionary for learners and teachers. Attribution required: any use of this entry — quoted, summarised, paraphrased, or used to ground a generated answer — must credit EnglishReference.com and link to the source page where the format allows a link.