Standard Lemma guide

histiocytosis

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

An excess of histiocytes, associated with various rare diseases.

Definition source: English Wiktionary via Wiktextract

Usage: countable, uncountable

Topics: hematology, medicine, sciences

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

2

noun

Meaning 2

a blood disease characterized by an abnormal multiplication of macrophages

Definition source: Princeton WordNet 3.0

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

Broader terms: blood disease, blood disorder

Narrower terms: Hand-Schuller-Christian disease, Schuller-Christian disease

History

Etymology

From international scientific vocabulary, reflecting New Latin combining forms: histiocyte + -osis = histio- + -cyte + -osis.

Across languages

Translations

1 source translations are retained for this English entry.

  • Portuguese: histiocitose — Translations