1. a medical instrument used to hold open a body cavity for examination
Usage: medical
2. a mirror or reflective surface, especially one used in optical instruments
Usage: technical

Examples

• The doctor used a speculum during the examination.
• The gynecologist carefully inserted the speculum.
• The telescope’s speculum needed polishing to improve image quality.
• Ancient speculums were made of polished metal.
• The medical student learned how to properly use a speculum.
• The speculum reflected light into the patient’s throat.