Phrase guide

Moro reflex

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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1

noun

Meaning 1

A normal primitive reflex elicited by a sudden stimulus, involving abduction and extension of the arms, followed by adduction; it develops between 28 and 32 weeks of gestation and disappears at 3–6 months of age.

Definition source: English Wiktionary via Wiktextract

Topics: medicine, physiology, sciences

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

2

noun

Meaning 2

a normal reflex of young infants; a sudden loud noise causes the child to stretch out the arms and flex the legs

Definition source: Princeton WordNet 3.0

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: startle reflex

Antonyms: none provided

Broader terms: startle, jump, start

History

Etymology

Named after Austrian physician and pediatrician Ernst Moro (1874–1951), who was the first in western medicine to describe the reflex.