English to English Dictionary

Ophitivorous

Feeding specifically on snakes; snake-eating.

Ophthalmics

Medicines, drops, or ointments used in the treatment of eye disorders and diseases.

Ophthalmology

The branch of medicine concerned with the study and treatment of disorders and diseases of the eye.

Opioid-agonist

A chemical substance that binds to opioid receptors in the brain and nervous system to produce a biological response, such as pain relief.

Opioid-antagonist

A pharmacological substance that binds to opioid receptors in the central nervous system or gastrointestinal tract without activating them, thereby blocking the effects of agonists such as heroin, morphine, or endorphins.

Opposite Witness

A person who provides evidence or testimony that contradicts or opposes a claim or assertion.

Opsomania

An abnormal or obsessive passion or craving for a particular food, especially a delicacy.

Opto-ultrasonic

Relating to or involving both optical and ultrasonic techniques, typically combined in advanced biomedical imaging or sensing systems.

Optoacoustic

Relating to or involving the generation of acoustic waves by the absorption of optical or light energy.

Optology

The scientific study or treatise of vision, optics, and the anatomical or physical properties of sight.

Orach

Any of various plants of the genus Atriplex, especially garden orach, grown as a pot herb or leaf vegetable resembling spinach.

Orchideous

Pertaining to, resembling, or having the characteristics of orchids.