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Tachy-

/tæk.i/ prefix Medical Terminology
Board Reviewed
Reviewed: Aug 2026
Medical Definition

Medical prefix denoting rapid, fast, or accelerated rate.

Detailed Medical Explanation

Tachy- is an essential concept in Medical Terminology.

Medical prefix denoting rapid, fast, or accelerated rate.

Clinical & Practical Significance

Examples: Tachycardia (fast heart rate), Tachypnea (rapid breathing).

Clinical Usage & Diagnostic Context

Examples: Tachycardia (fast heart rate), Tachypnea (rapid breathing).

Patient-Friendly Explanation

Prefix meaning fast.

Professional Clinical Context

<p><strong>Tachy-</strong> is an essential concept in <em>Medical Terminology</em>.</p><p>Medical prefix denoting rapid, fast, or accelerated rate.</p><h4>Clinical & Practical Significance</h4><p>Examples: Tachycardia (fast heart rate), Tachypnea (rapid breathing).</p>

Medical Disclaimer

This medical glossary entry is provided for health education and informational purposes only. It does not constitute medical advice, diagnosis, or treatment. Always consult a qualified healthcare professional regarding any clinical condition.

Terminology Metadata
  • Specialty Medical Terminology
  • Part of Speech prefix
  • Terminology Type prefix
  • Etymology & Origin Greek: tachys (swift, rapid)
  • Synonyms & Aliases Fast, rapid, swift
Related Medical Terms
Hyper-
Medical prefix denoting excessive, elevated, above normal, or beyond threshold.
Hypo-
Medical prefix denoting deficient, below normal, low, or under threshold.
Brady-
Medical prefix denoting slowness or decreased rate.
-itis
Medical suffix denoting inflammation or infection of a specified organ or tissue.
-ology
Medical suffix denoting the scientific study, branch of knowledge, or specialty of a domain.
Authoritative References

WHO / Medical Literature

Educational / Fair Use
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