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The Sex Dictionary
The Letter L

How To Have Good Sex, Inc.

Labia (singular, labium):
in the female sex organs the outside lips (labia majora) and the inside lips (labia minora) that converge to cover the clitoris with the clitoral hood.

Labioscrotal (noun, labioscrotum): formed and looking like female labia that, instead of being completely separated, are partially fused to resemble a scrotum; or are like a divided scrotum that resembles labia.

Lactation: the secretion of milk from the breasts; the period of suckling the young until weaning.

Lactogenic hormone: the pituitary hormone that stimulates the production of milk from the mammary glands; synonym, prolactin.

Laparotomy: a surgical incision through the flank or loin or, less precisely, the abdominal wall, as for the purpose of exploring the morphology of the internal reproductive organs.

Lekking: a mating ritual, relatively rare among species, in which at the beginning of the mating season males assemble on the mating ground or lek and wait until they are visited by females and selected for mating. 2. A mating ritual, relatively rare among species, in which at the beginning of each mating season males assemble on the same site in the same mating ground or lek and wait to be visited by females and possibly selected for copulation. See also proceptive phase.

Lesbian (adjective, lesbian): female homosexual, named after the Aegian island, Lesbos, whence came the homosexual woman poet, Sappho, of ancient Greece. There is no corresponding eponym for a homosexual or gay male.

Leydig cells: in the testes, the hormone-producing cells that are packed in like bunches of grapes between the seminiferous tubules in which sperms are produced.; the interstital cells in the testes that produce testosterone; they are packed between the seminiferous tubules in which the sperms grow.

LH (luteinizing hormone): a gonadotropin secreted by the anterior lobe of the pituitary gland that stimulates testosterone secretion from the testis, in the male, and the formation of the corpus luteum and the secretion of progesterone from the ovary, in the female; one of the gonadotropic hormones of the pituitary gland. It induces release of the egg from the graafian follicle and transformation of the latter into a corpus luteum. LH in the female is the same as ICSH (interstitial cell stimulating hormone), which stimulates testosterone production in the male; see also FSH.

LHRH (luteinizing hormone-releasing hormone): from the hypothalamus, a hormone that triggers the release of the pituitary gonadotropins, LH and FSH. LH frees the ovum and changes its graafian follicle into the corpus luteum. LHRH, LRH, LRF (F = factor), and GnRH (gonadotropin-releasing hormone) are synonymous.

Libido: sexual drive, subjectively experienced and reported. Hypothetically, in psychoanalytic doctrine, it also means the positive life force of Eros as compared with Thanatos, the death force.

Limbic system: the old cortex or paleocortex, as contrasted with the neocortex, of the brain. Its functions pertain to those aspects of the human mind and behavior that are shared by lower, especially mammalian species.

Limerence (adjective, limerent): a recently coined name (Tennov, 1979) for the experience of having fallen in love and being irrationally and fixatedly love-smitten, irrespective of the degree to which one's love is requited or unrequited. the state of having fallen in love and being love-smitten. See also infatuation.

Lordosis: in four-legged animals, the crouching, arched or saddle-back, mating posture of the female presenting her hind end to the male for copulation [from Greek, lordosis].

Love: the personal experience and manifest expression of being attached or bonded to another person. There is sacred and profane love, and affectional and erotic love. The word is also used in the vernacular as a synonym for like. See also eroticism; falling in love; limerance; infatuation.

Loveblot: a person (or image) who sufficiently resembles the [person or] image depicted in someone else's lovemap as to become the recipient onto whom the lovemap is projected in a limerent love affair, regardless of whether the response is one of love requited or, being unrequited, induces a pathological reaction of lovesickness.

Lovemap: a developmental representation or template synchronously in the mind and in the brain depicting the idealized lover, the idealized love affair, and the idealized program of sexuoerotic activity projected in imagery or actually engaged in with the lover.

Lovemap displacement: an intrinsic element that, developmentally dislocated from its regular place, becomes respositioned in a lovemap, changing it from a normophilic lovemap into a paraphilic one of the displacement type--for example, genital display in paraphilic exhibitionism.

Lovemap inclusion: an extraneous element that becomes developmentally incorporated into a lovemap, changing it from a normophilic lovemap into a paraphilic one of the inclusion type--for example, paraphilic fetishism.

Lovesickness: the personal experience and manifest expression of agony when the partner with whom one has fallen in love is a total mismatch whose response is indifference, or a partial mismatch whose reciprocity is incomplete, deficient, anomalous, or otherwise unsatisfactory.

Lust: longing, eagerness, inclination, or sensuous desire; normal sexual desire, or sexual desire stigmatized as degrading passion.

Lust murder: see erotophonophilia. lust murderism (homicidophilia): the very rare condition in which a person is dependent on sadistic homicide of the partner, or the restaging of it in fantasy, in order to obtain erotic arousal and facilitate or achieve orgasm. Recorded cases are either heterosexual or homosexual, but not bisexual. The converse condition is the masochistic staging of one's own murder (autoassassinatophilia). See also serial killer.


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The Founder: "Alex" Caroline Robboy, LCSW, QSW, CAS

Ms. Robboy is the Founder and Chief Executive Officer of The Center for Growth Inc and How To Have Good Sex Inc.  Alex practices marriage and family therapy and sex therapy, and also conducts periodic seminars about human sexuality throughout the northeastern United States.

Ms. Robboy graduated from the University of Pennsylvania where she earned a Masters degree in Social Work, a Certificate of Advanced Studies in Human Sexuality Education and a Post-Masters Certificate in Marriage Counseling & Sex Therapy. Through the American Board of Sexology, she is a board certified sexologist and through the American Association of Sex Educators Counselors and Therapists a certified sex therapist.  Additionally, she is a licensed clinical social worker and a member of the American Board of Marriage and Family Therapy.


  Our Philosophy sex is like dancing, it changes every time. It depends on culture, atmosphere and mood. Sometimes it is done alone, with a partner or in a group. It can be fast and hard or slow and soft. Sex is a combination of non-verbal negotiation and verbal cues: a scream, a twitch of the toes, or a flush of the face. There is no one 'right' way to move, only what feels good to all those involved. 
     The purpose of this site is to share information. Thus, if you have any ideas, thoughts or information that you believe others might benefit from, please e-mail your tip to and I  will be sure to include it on either our weekly newsletter or here on the actual website. 

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