per os

Definition

Latin phrase meaning 'through the mouth', used to indicate administration of medication or other substances via oral ingestion. In entomology and arachnology, it might be referenced in the context of how certain chemicals or treatments are delivered to insects or spiders.

Etymology

Latin 'per' meaning 'through' and 'os' meaning 'mouth'.

Example

The drug was administered per os to the insect.

Related Terms

• Oral
• Ingestion