Ophthalmia

By this term is now usually understood simple inflammation of the conjunctiva. (Catarrhal Ophthalmia.)

Ophthalmitis

Inflammation of the entire ball of the eye.

Orchitis

Swelling of the testicle.

Organic Disease

In pathology, diseases in which there is derangement or alteration of structure are termed organic.

Os Uteri

The mouth or opening of the womb.

Otalgia

Ear-ache.

Otitis

Inflammation of the ear.

Otorrhoea

A discharge, or running from the ear.

Ozaena

An ulcer situated in the nose. See Ozaena.

Palpebrae

The eyelids.

Palpitatis Cordis

Palpitation of the heart.

Panaris

Whitlow; panaritium; paronychia.

Pancreas

A gland situated transversely behind the stomach.

Paralysis

Palsy.

Paralysis Paraplegica

Paralysis affecting one half of the body transversely.

Parenchyma

The connecting medium of the substance of the lungs.

Parotitis

Inflammation of the parotid gland; the mumps.

Paroxysm

A periodical fit of a disease.

Parturition

The act of bringing forth.

Pathogenetic The producing or creating of abnormal phenomena.

Pathognomonic Characteristic of and peculiar to any disease.

Pathology

The investigation of the nature of disease.

Pectoral

Appertaining to the chest.

Pectus

The chest.

Pediculi

Lice.

Pelvis

The basin-shaped cavity below the abdomen, containing the bladder and rectum; and womb in woman.

Percussion

The act of striking upon the chest, etc. in order to elicit sounds to ascertain the state of the subjacent parts.

Perinaeum

The space between the anus and the external sexual organs.

Periosteum

The membrane which envelops the bones.

Peritonaeum

The serous membrane which lines the cavity of the abdomen, and envelops the viscera contained therein.

Peritonitis

Inflammation of the peritoneum.

Perniones

Chilblains.

Pertussis

Hooping-cough.

Petechiae

Spots of a red or purple hue, resembling a flea-bite.

Phagedenic

A term applied to any sores which eat away the parts as it were.

Pharynx

The throat, or upper part of the gullet.

Phases

Appearances, or changes exhibited by any body, or by disease.

Phlegmatic Vide Leuco-phleg-matic.

Phlegmon

An inflammation of that nature which is otherwise termed healthy inflammation.

Phrenitis

Inflammation of the brain.

Phthisis

(Pulmonalis) Consumption, abscess of the lungs.

Physiology

The branch of medicine which treats of the functions of the human body.