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Clinical & Layman Language Dictionary (Deduplicated A–Z)

Medical Terms & Simple Meanings A–Z

Search over 153+ verified medical terms. Clear layman definitions, clinical explanations, frequency ratings (⭐⭐⭐ Very Common), pronunciations, and body system tags.

Showing 4 Medical Terms (Letter "L")Reset Filters
General Medical⭐⭐ Common

Localized Pain

/LOH-kuhl-yzd payn/
Simple Meaning:

Pain strictly limited to one specific body area.

Nociceptive pain circumscribed to a distinct anatomical site without regional radiation.

Neurological⭐⭐ Common

Lethargy

/LETH-er-jee/
Simple Meaning:

Severe lack of energy and reduced alertness.

Pathological drowsiness or apathy characterized by slowness, listlessness, and delayed response to stimuli.

General Medical⭐⭐ Common

Lesion

/LEE-zhuhn/
Simple Meaning:

Area of abnormal or damaged tissue.

Generic pathological term denoting any circumscribed area of tissue damage caused by injury, ulceration, or tumor.

General Medical⭐⭐⭐ Very Common

Lump

/lump/
Simple Meaning:

Noticeable mass, bump, or swelling under skin.

Palpable localized tissue enlargement requiring diagnostic evaluation to differentiate cyst, lipoma, lymph node, or tumor.

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