Definition

To reduce the maximum capacity or performance level of equipment or materials, often due to wear or insufficient quality.

Example

The engineers decided to derate the generator to ensure it operated safely under the current conditions.

Tense Forms

Conversation

I heard they are going to derate the power supply for the old machines.

Really? That seems like a smart move considering their age.

Yeah, it makes sense to derate them instead of risking a breakdown.

Exactly, safety first! I hope they upgrade the newer ones too.

Synonyms & Antonyms

Root Explanation

Derate → It is formed from "de-" (meaning down or away) and "rate" (from Latin "ratem", meaning to fix or determine). The word "derate" means to reduce the rating or capacity of something, particularly in a technical context.

Memory Tip

Think of 'de-' meaning to go 'down' and 'rate' as fixing a value — so derate means to lower the fixed value or capacity.

Visually Confused Words