Standard Lemma guide

orthostasis

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 act or status of standing upright.

Definition source: English Wiktionary via Wiktextract

Usage: uncountable

Topics: sciences

Examples

  • lightheadedness during orthostasis

Meaning relationships

Synonyms: orthostatism

Antonyms: none provided

2

noun

Meaning 2

Ellipsis of orthostatic hypotension.

Definition source: English Wiktionary via Wiktextract

Usage: abbreviation, alt-of, ellipsis, especially, informal, uncountable

Topics: medicine, sciences

Examples

  • A history of orthostasis prompts some caution in prescribing of antihypertensives.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

History

Etymology

Etymology tree Proto-Indo-European *h3erdh-der. Proto-Hellenic *orthwós Ancient Greek ὀρθός (orthós)lbor. English ortho- English stasis English orthostasis From ortho- + stasis.