# CAD

/ˈkæd/ (US) · /kˈæd/ (UK)

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

## Senses

### 1. design software

noun · CEFR B2 · Technical

Stands for Computer-Aided Design. You use this software to create precise drawings for buildings, cars, or machines.

For teachers: Abbreviation for Computer-Aided Design. Refers to the use of computer systems to assist in the creation, modification, or optimization of a design.

- The architect used CAD to draw the plans for the new library.
- Proficiency in CAD is a prerequisite for most entry-level positions in mechanical engineering and industrial design.

Usage: Often used as an uncountable noun or as a modifier before another noun like 'software' or 'operator'.

### 2. dishonorable man

noun · CEFR C2 · Literary · British English · Archaic

A man who behaves badly or dishonestly, especially toward women.

For teachers: A man who behaves in a dishonorable or ungentlemanly way. This sense is increasingly rare in modern speech and carries a literary or old-fashioned tone.

- He proved to be a total cad when he left her without saying a word.
- In the Victorian novel, the antagonist is often portrayed as a charming cad who eventually betrays the protagonist's trust.

Teaching tip: This sense is mostly found in older British literature; modern speakers would use 'jerk' or 'cheat' instead.

### 3. heart disease

noun · CEFR C1 · Technical

Stands for Coronary Artery Disease. It is a common heart condition where the blood vessels become narrow or blocked.

For teachers: Abbreviation for Coronary Artery Disease. A condition characterized by the accumulation of plaque in the arteries that supply blood to the heart.

- The doctor explained that a healthy diet can help prevent CAD.
- Clinical trials have shown that early intervention is crucial for patients diagnosed with advanced CAD to prevent myocardial infarction.

## Examples

- The architect used CAD to design the new office.
- Before the factory begins production, the engineers must finalize the CAD models to ensure every part fits perfectly.
- Modern architectural firms have largely abandoned traditional drafting tables in favor of sophisticated CAD platforms that allow for real-time structural simulations and 3D rendering.

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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.