Standard Lemma guide

tumour

noun · 2 senses · updated from the 2026-07-25 local source snapshot

Definitions and examples are grouped by meaning. Pronunciation, history, word forms, translations, descendants, synonyms, antonyms, derived terms, and related words appear whenever the source provides them.

Sound

Pronunciation

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No pronunciation record was provided for this word.

1

noun

Meaning 1

Commonwealth standard spelling of tumor.

Definition source: English Wiktionary via Wiktextract

Topics: medicine, oncology, pathology, sciences

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

2

noun

Meaning 2

an abnormal new mass of tissue that serves no purpose

Definition source: Princeton WordNet 3.0

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: tumor, neoplasm

Antonyms: none provided

Broader terms: growth

Narrower terms: acanthoma, skin tumor, angioma, benign tumor, benign tumour, nonmalignant tumor, nonmalignant tumour, nonmalignant neoplasm, blastoma, blastocytoma, embryonal carcinosarcoma, brain tumor, brain tumour, carcinoid, celioma, granuloma, lipoma, adipose tumor, malignant tumor, malignant neoplasm, metastatic tumor, meningioma, neurofibroma, neurilemoma, neuroma, pheochromocytoma, phaeochromocytoma, pinealoma, plasmacytoma, psammoma, sand tumor, teratoma

History

Etymology

From Middle English tumour, from Old French tumour, from Latin tumor (“swelling”), from tumeō (“bulge, swell”, verb), from Proto-Indo-European *tewh2- (“to swell”). Related to English thumb.