How to Pronounce Opsoclonus-Myoclonus Syndrome
Definition, meaning, and phonetic spelling
Opsoclonus-Myoclonus Syndrome Pronunciation
op-soh-KLOH-nus my-OK-loh-nus SIN-drohm
Stressed syllable in ALL CAPS · hyphens separate syllables
Syllable Breakdown
op
soh
KLOH
stress here
nus my
OK
stress here
loh
nus SIN
drohm
8 syllables
What is Opsoclonus-Myoclonus Syndrome?
A rare neurological disorder characterized by rapid, irregular, multidirectional eye movements (opsoclonus), sudden muscle jerks (myoclonus), and often encephalopathy and ataxia. In children it is often associated with neuroblastoma; in adults it can be paraneoplastic or post-infectious.
Questions About Opsoclonus-Myoclonus Syndrome
How do you pronounce opsoclonus-myoclonus syndrome?
+
Say it like this: op-soh-KLOH-nus my-OK-loh-nus SIN-drohm. The stress falls on the second syllable of "opsoclonus" (KLOH) and the second syllable of "myoclonus" (OK). The whole phrase might sound challenging at first, but breaking it into three parts—opsoclonus, myoclonus, and syndrome—makes it easier to manage.
What does the stress mistake people make with this term?
+
Many people accidentally stress the first syllable and say "OP-so-clonus" instead of "op-soh-KLOH-nus." Remember that the heavy stress goes on KLOH in the middle of the first word, not at the beginning. Similarly, some people stress the first syllable of myoclonus when it should be "my-OK-loh-nus."
Can you break this term into its syllables?
+
Sure! Opsoclonus breaks into: op-soh-KLOH-nus (4 syllables). Myoclonus breaks into: my-OK-loh-nus (4 syllables). Syndrome is: SIN-drohm (2 syllables). Saying each part separately first can help you blend them together smoothly.
What do the word parts 'opso' and 'clonus' mean?
+
Opso comes from Greek and relates to vision or the eye. Clonus (KLOH-nus) also comes from Greek and means rapid, jerking movements. So opsoclonus literally points to jerking eye movements, which is a key feature described by this medical term.
What does 'myoclonus' mean broken down?
+
Myoclonus comes from Greek roots: myo- means muscle, and -clonus means sudden jerks or spasms. So myoclonus describes sudden, involuntary muscle jerks. You'll see the "myo-" prefix in many muscle-related medical words like myopathy or myositis.
What's the simplest way to explain what this condition name means?
+
The name describes three main things: opsoclonus (jerky eye movements), myoclonus (jerky muscle movements), and syndrome (a group of symptoms happening together). In plain English, it's a condition where someone experiences rapid, irregular eye movements combined with sudden muscle jerks.
Are there any abbreviations for this condition?
+
Yes, doctors often shorten it to OMS. You'd pronounce the letters individually: "O-M-S." If someone writes or says OMS in a medical context, they're referring to opsoclonus-myoclonus syndrome.
What other medical words share roots with opsoclonus-myoclonus syndrome?
+
You'll find "clonus" in other movement disorders like hemichorea-hemiballismus (which also involves involuntary movements). The prefix "myo-" appears in myopathy, myositis, and myoma—all words related to muscles. Understanding these smaller word pieces helps you recognize and say similar medical terms.

