Opioid
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  Opioid



Opioid

    A peptide, naturally occurring in the brain and elsewhere in the body, the effect of which resembles that of opium or a morphine-like synthetic opiate.

RELATED TERMS
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Peptide
Two or more amino acids linked together.

Brain
"That part of the central nervous system that is located within the cranium (skull). The brain functions as the primary receiver, organizer and distributor of information for the body. It has two (right and left) halves called ""hemispheres."" "



SIMILAR TERMS
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PREVIOUS AND NEXT TERMS
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Olfaction
The sensory function of smelling.

Olfactophilia
One of the paraphilias of the fetishistic/talismanic type in which the sexuoerotic stimulus is associated with smell and odors emanating from parts of the body, especially the sexual and adjacent parts.

Oligospermia
Abnormally low number of sperm in the semen, with resultant relative infertility.

Ondinisme
Paraphilia of the fetishistic/talismanic type in which sexuoerotic arousal and facilitation or attainment of orgasm are responsive to, and being urinated upon and/or swallowing urine. There is no technical term for the reciprocal condition of urinating on or in the mouth of the partner. Synonym urolagnia. (adjective, urophilic): the condition of being responsive to or dependent on the smell or taste of urine, or the sight and someone urinating, in order to obtain erotic arousal and facilitate or achieve orgasm.

Ontogeny
In biology, the developmental history of the life span of a single individual or organism, as compared with phylogeny, which is the developmental history of all members of the species.

Opioid

Opponent-process theory
A theory proposed by Richard Solomon (1973, 1980) to augment traditional stimulus-response learning theory, according to which powerful aversion or attraction to a particular activity or experience undergoes reversal, as for example, pain reversing into pleasure, tragedy into triumph, terror into euphoria, or the proscribed into the prescribed. Opponent-process theory explains addictions to opioids, alcohol, other drugs, and to the positive and negative affective states of love, fear and anxiety, and behaviors such as exercise and combat of a war or sporting event. The theory explains, in part, the development of the paraphilias and sexuoerotic participation in sadomasochism.

Orchidectomy
Surgical opening of the scrotum and removal of the testicles for testicular cancer, or to remove the major source of testosterone for prostate cancer therapy, or in relatively ineffective attempts of castration to control the sexual behavior of adjudged "sex offenders."

Orgasmic phase
The third of four sexual phases delineated by Masters and Johnson.

Orgy
Vernacular term for sexual sharing of partners at a party, either in pairs, or as a group.

Osmolagnia
Sexuoerotic stimulation from odors.

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