Word.ws English Dictionary

Cat 5

Cat 5 noun: a twisted pair cable for carrying signals, particularly for Ethernet-based computer networks.

Noun

Cat 5 (uncountable)

  1. A twisted pair cable for carrying signals, particularly for Ethernet-based computer networks.
    • Cat-5 UTP cable – level 5 cables have twisted-pair cores with a characteristic impedance of 100Ω (±15Ω) and a capacitance of 45.9 pF/m. Conductor resistance is around 9Ω/100 m.2000, Bill Buchanan, Computer Busses: Design and Application, Arnold, London, →ISBN, page 60
    • When first connecting the service, it may be necessary to connect the Cat 5 or Cat 6 Ethernet cable directly to the computer to sign up with the ISP before inserting the router/firewall and switch between the modem and the computer(s).2006, Dennis C. Brewer, Paul A. Brewer, Wiring Your Digital Home For Dummies, Wiley Publishing, Inc., →ISBN, page 200

Origin of Cat 5

From category + 5.

Questions about Cat 5

What does Cat 5 mean?
Cat 5 means a twisted pair cable for carrying signals, particularly for Ethernet-based computer networks.
What part of speech is Cat 5?
Cat 5 is a noun.

Words near Cat 5 in the dictionary

  1. caswellite
  2. caswellsilverite
  3. caszh
  4. Casziel
  5. cat
  6. Cat 5
  7. cat activation noise
  8. cat and dog
  9. cat and dog life
  10. cat and dog lives
  11. cat and kitten sneaking

Source and license

Adapted from Wiktionary: Cat 5 (page history and authors). Text available under the Creative Commons Attribution-ShareAlike 4.0 license. Word.ws reformatted the entry and added links. Wiktionary data of 2026-09-02.

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Cite this entry: “Cat 5.” Word.ws, https://word.ws/cat_5. Based on Wiktionary, CC BY-SA 4.0.