lept-, lepto-

(Greek: thin, small, fine, delicate, mild; from "peeled, husked"; used primarily in the sense of "abnormally thin, narrow, slender, or delicate")

leptosome
1. A person with a narrow, slight, or slender build.
2. Tall and slender.
leptospirosis
Any of various illnesses caused by infection with bacteria of the genus Leptospira, found in the urine of a wide variety of wild and domestic animals and transmissible to humans through contact with the urine or contaminated soil or water. Clinical syndromes vary from mild carrier state to fatal disease.
leptothricosis
An obsolete term for any disease caused by the now invalid genus Leptothrix (a genus of bacteria, characterised by having their filaments very long, slender, and indistinctly articulated).
Leptothrix
1. A genus of bacteria, characterised by having their filaments very long, slender, and indistinctly articulated.
2. Having the form of a little chain; applied to bacteria when, as in multiplication by fission, they form a chain of filiform individuals.
leptotrichia
1. The thinness of each hair.
2. A genus of anaerobic, gram-negative, filamentous bacteria that naturally occur in the oral cavity but can also occur in the genitourinary tract.

They consist of straight or slightly curved, nonmotile rods with one or both ends rounded or pointed, arranged frequently in pairs or long filaments.

leptotrichosis
Any disease attributed to a species of Leptotrichia (or Leptothrix).

In fact, Leptotrichia is considered a doubtful pathogen and this is not a useful term (according to the International Dictionary of Medicine and Biology, Volume II, Churchill Livingston, New York, 1986).

leptus
The six-legged young, or larva, of certain mites; sometimes used as a generic name.
logolept, logoleptic
A word maniac or someone who has seizures about words; a verbivore, a logophile.

As Charles H. Elster, in his There’s a Word for It! writes: “The logoleptic person can lose verbal control in various ways—by going gaga over a pyrotechnic display of logodaedaly, by participating in a logomachy over some obscure point of grammar or etymology, or by being rendered senseless by a logographer’s logorrhea.” (page 199)

neuraleptanesthesia (s) (noun), neuraleptanesthesias (pl)
Consciousness that results from the use of nerve blocking pain medication; for example, a narcotic, for use in some surgical procedures: Because Dr.McMahon wanted to be able to speak with Susan during the surgical process, she used a medication that resulted in neuraleptanesthesia.
neuroleptic
1. A drug that is useful in the treatment of mental disorders, especially psychoses.
2. A reference to the actions of such a drug.
neuroleptoanalgesia
A state of analgesic consciousness produced by the administration of neuroleptic drugs, allowing painless surgery to be performed on a wakeful subject.