# aqueduct

/ˈækwəˌdəkt/ (US) · /ˈækwɪdˌʌkt/ (UK) · CEFR C1 · Noun

Source: https://englishreference.com/word/aqueduct
Updated: 2026-05-18

## Definition

a long, narrow tube in the body that carries water or other fluids. In the brain, it helps move fluid around to keep the brain healthy.

For teachers: a tubular structure in the body that serves as a channel for the passage of fluids. In the central nervous system, it refers to one of the four channels that circulate cerebrospinal fluid.

## Examples

- The aqueduct helps move fluid through the brain.
- Doctors used an MRI to check if the aqueduct was blocked, which could cause pressure in the brain.
- The lateral and medial aqueducts form a critical part of the brain's ventricular system, ensuring the continuous circulation of cerebrospinal fluid to maintain intracranial pressure and nutrient exchange.

---

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.