English Reference

Word

DAS

Phoneticsdas

/ˈdæs/

Definitions

01computing storage

C1 · Computing

n. Stands for Direct-Attached Storage. It is a digital storage device, like a hard drive, that is connected directly to a computer rather than through a network.

n. Abbreviation for Direct-Attached Storage. Refers to digital storage directly connected to a computer or server without a storage network (SAN or NAS) in between.

“The server uses a DAS for faster data access instead of the company network.”

“For high-performance video editing, the workstation was configured with a high-capacity DAS to minimize latency during large file transfers.”

Technical

Usage

Usually functions as an uncountable noun or a modifier before another noun.

Teaching tip

Learners in IT should distinguish this from NAS (Network Attached Storage).

Synonyms

local storageexternal drive

Antonyms

02data collection system

C1 · Science

n. Stands for Data Acquisition System. It is a set of tools used to collect information from the real world, like temperature or speed, and turn it into computer data.

n. Abbreviation for Data Acquisition System. A system designed to convert physical conditions into digital signals for processing and analysis.

“The engineers set up a DAS to monitor the bridge's vibrations during the storm.”

“The laboratory upgraded its DAS to ensure higher sampling rates during the aerodynamic testing of the new wing prototype.”

Technical

Usage

Often used with the definite article 'the DAS'.

Teaching tip

Commonly used in engineering and laboratory contexts; sometimes abbreviated as DAQ.

Synonyms

DAQdata logger

03military defense

C2

n. Stands for Defensive Aids System. It is a system on military aircraft or vehicles that detects and protects against incoming threats like missiles.

n. Abbreviation for Defensive Aids System. An integrated suite of equipment designed to protect a platform from attack, typically including sensors and countermeasures.

“The pilot relied on the DAS to detect the incoming missile.”

“Modern fighter jets are equipped with a sophisticated DAS that automatically deploys flares when a heat-seeking threat is detected.”

Technical

Usage

Commonly used in aviation and defense industry contexts.

Teaching tip

This is a highly specialized term; learners will likely only encounter it in military or aerospace literature.

Synonyms

defense suitecountermeasures

Real-World Examples

“The approach itself is called distributed acoustic sensing, or DAS.”
Smithsonian Magazine · 13 Aug 2026

Domains

AviationElectronicsMedicineMilitary

This entry

Level
C2 · Proficiency
Frequency
Frequent
Updated

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