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Reservoir

Podcast 1 · Introduction

Reservoir /ˈrezəvwɑː/ · noun

A short documentary narration — meaning, origin, and how the word is used.

In this course, a reservoir is a large artificial lake storing water for supply. The related entry for reside gives a related word, and the Cambridge definition of reservoir and the Merriam-Webster entry for reservoir give the main sense. For more background, see the encyclopaedia article on reservoir.

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Podcast 2 · Daily Use

In Conversation

Two British speakers using "reservoir" naturally in everyday talk.

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Podcast 3 · Prompt Engineering

Prompting with "reservoir"

An instructor and developer explore real, copy-ready AI prompts built around the word.

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Transcript: “Reservoir” vocabulary micro-course

Read along with the three podcasts, or open the full dictionary entry for Reservoir for the definition, Arabic meaning, synonyms and example sentences.

Podcast 1 — Introduction & meaning

Narrator: Today's word is "Reservoir" — noun, pronounced /ˈrezəvwɑː/, with the stress on "res".

Narrator: A reservoir is a large artificial lake used to store water for public supply.

Narrator: In plain English, a reservoir is a man-made lake that holds drinking water for a town.

Narrator: It comes from the French réservoir, meaning a store, from the verb reserver, to reserve.

Narrator: "A reservoir of water" describes a stored supply, natural or artificial.

Narrator: It differs from lake because a reservoir is made to store water, whereas a lake is natural.

Narrator: "A reservoir of knowledge" is a figurative sense meaning a deep store of information.

Narrator: Water supply, ecology, engineering and everyday speech all rely on the word reservoir.

Narrator: So remember: a reservoir is a water store, from the French for a reserve.

Read podcasts 2 and 3

Podcast 2 — In conversation

Speaker A: What is a reservoir?

Speaker B: A water store! RESERVOIR comes from the French réservoir, a store, so it's a large artificial lake holding water for supply.

Speaker A: So it's man-made?

Speaker B: Usually yes — built to store drinking water!

Speaker A: Example sentences?

Speaker B: "The town's reservoir"; "a reservoir of knowledge"; "reservoir levels are low" — supply, metaphor and drought.

Speaker A: Common mistakes?

Speaker B: Don't pronounce the final t, because it's silent, giving REZ-uh-vwar.

Speaker A: Close relatives?

Speaker B: 'Lake' the natural cousin, 'tank' the smaller twin, 'cistern' the household alternative. The word keeps its storing charm!

Podcast 3 — Prompt engineering

Speaker B: Let's use "reservoir" in AI prompts — useful for water apps and environment tools.

Speaker A: So a prompt could frame water supply?

Speaker B: Right. For an environment app, you'd write:

Prompt: Write a short guide on how reservoirs supply drinking water, naming two treatment steps.

Speaker A: How about a drought tool?

Speaker B: Ask the model to report:

Prompt: Draft a short report on low reservoir levels, naming the region and one restriction.

Speaker A: Could it help with a science bot?

Speaker B: Yes, you can frame ecology:

Prompt: Summarise in two sentences how reservoirs affect local wildlife, naming one impact.

Speaker A: One more?

Speaker B: For a metaphor chatbot, try this:

Prompt: Write a short sentence using reservoir of as a metaphor, naming one abstract quality.