Exophthalmia

(From Exophthalmia 3787 out, and the eye,) bufihthalmus, ecpiesmos, melon; a dislocatioi of the eye. In this disease the globe, more or less distended, rises from its orbit, either from its own increase of size, or the enlargement of some part below; nor can it be covered by the palpebral. The cure must depend on the nature of the cause.

Exorescentia

See Exacerbatio. Exos, (from ex, without, and os, a bone). A leech See Hirudo.

Exostoses

See Gumma.

Exoticus

Exotic, (from Exoticus 3791 without). Any thing brought from foreign countries.

Expectoratio

Expectoration, (from ex, and pectus; or from expectoro,to throw out of the breast). See Expectorantia and Anacathartica.

Expellentia

(From expello, to drive out). Medicines supposed to drive out morbid humours from the body.

Expiratio

(From expiro, to breathe forth). Ec-pneumatosis, ecpnaea. The expulsion of air from the lungs. See Respiratio.

Exploratio

(From exploro, to search out). Exploration. Probing a wound or ulcer.

Exploratrix

See Cupella.

Explosio

(From explodo, to drive off). Explosion; in chemistry, detonation, or fulmination.

Expressio

(From exprimo, to press out). Expression is a mechanical operation by which the juices of many plants are obtained, and sweet oil extracted, from olives, almonds, or lintseed.

This operation is effected by first bruising the substance, and then forcibly squeezing it in the press. The more succulent bodies may be bruised and wrapped in a linen cloth before they are committed to the press; but more viscid subjects require that a little water be previously added.

When an oil is to be obtained from seeds, the cheeks of the press should be gently heated, that the product may be increased: but when oils are to be taken internally, cold expression is the most proper, as heat dispo-poses the oil to become soon rancid. Some of the aro-matics yield a pungent oil; but that from mustard seed is insipid, and from poppy seed wholly free from any narcotic power.

Exsertus

(From exsero, to thrust out). In botany it is applied to the stamen, and means appearing above the corolla.

Exsiccatio

(From exsicco, to dry up). Drying. This pharmaceutic operation is effected by exhaling the moisture from the body, to be dried over a gentle fire, or by absorbing it, as when such subjects are laid on chalk stones for this end. Plants or their leaves should be dried in a free air without sun, and frequently turned. Tender flowers, which may lose their colour or aroma by long exposure to the air, may be dried by a gentle heat.

When great heat is employed, the operation is styled coction, insolation, or torrefaction; the first relates to fluids, the second to fluids and solids, and the third to solids only. Decantation and filtration are subservient to the process of exsiccation.