Standard Lemma guide

thrombocytosis

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

Each Play button uses your device's default local English voice, or a natural local fallback. The selected voice name appears after playback. This is synthesized speech, not a source recording.

No pronunciation record was provided for this word.

1

noun

Meaning 1

The condition of having an abnormally high number of thrombocytes (platelets) in the bloodstream; can give a predisposition to thrombosis

Definition source: English Wiktionary via Wiktextract

Topics: medicine, sciences

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: thrombocythemia

Antonyms: none provided

2

noun

Meaning 2

increase in the number of platelets in the blood which tends to cause clots to form; associated with many neoplasms and chronic infections and other diseases

Definition source: Princeton WordNet 3.0

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

Broader terms: symptom

History

Etymology

From thrombocyte + -osis = thrombo- + cytosis.

Across languages

Translations

7 source translations are retained for this English entry.

  • French: thrombocytémie — having an abnormally high number of platelets in the bloodstream
  • Italian: trombocitemia — having an abnormally high number of platelets in the bloodstream
  • Italian: trombocitosi — having an abnormally high number of platelets in the bloodstream
  • Italian: piastrinosi — having an abnormally high number of platelets in the bloodstream
  • Romanian: trombocitemie — having an abnormally high number of platelets in the bloodstream
  • Spanish: trombocitemia — having an abnormally high number of platelets in the bloodstream
  • Spanish: trombocitosis — having an abnormally high number of platelets in the bloodstream