Types of dictionaries

1. spam (From Hormel's Spiced Ham, via the Monty Python "Spam" song) To post irrelevant or inappropriate messages to one or more Usenet newsgroups, mailing lists, or other messaging system in deliberate or accidental violation of netiquette.
2. ampere [A] The ampere is the basic unit of electric current. It is that current which produces a specified force between two parallel wires which are 1 metre apart in a vacuum.It is named after the French physicist Andre Ampere (1775-1836).
3. acute idiopathic polyneuritis The exact cause is unknown but has been associated with an abnormal immune response to viral infection, particularly cytomegalovirus infection, in which there is cell-mediated immunity to a component of myelin. The disease may be autoimmune in origin and complete recovery can take up to six months.
4. racketeering n. the federal crime of conspiring to organize to commit crimes, particularly as a regular business ("organized crime" or "the Mafia").
5. A dab hand coll a person who is able to do a particular thing easily and well: my mother is a dab hand at making cakes // they could leave the baby at its grandmother’s house-she was a dab hand with children [N 3: usu. Foll. By at/with + P ] Sometimes shortened to dab: you’re quite a dab at tennis aren’t you?
6. dilettante Originally, an admirer or lover of the arts, a connoisseur. Or, a dabbler in an art or a field of knowledge; an amateur. Today, "dilettante" is more likely to be used in the latter sense, and taken by many -- by the listener, even if not by the speaker -- as an insult. It was more innocent in its original uses, as derived from the Italian word "dilettare," meaning "to delight." In the 18th century, a dilettante was simply a person who delighted in the arts. Later, the term came to refer to an amateur -- someone who cultivates an art as a pastime without pursuing it professionally. From this meaning developed the pejorative meaning the word carries now: a person who dabbles in an art, but is not truly devoted to it. (pr. dih'leh-tahnt)
7. positivism Belief that natural science, based on observation, comprises the whole of human knowledge. Positivists like Auguste Comte, then, reject as meaningless the claims of theology and metaphysics. The most influential twentieth-century version is logical positivism
8. cloning vector A DNA molecule originating from a virus, a plasmid, or the cell of a higher organism into which another DNA fragment of appropriate size can be integrated without loss of the vectors capacity for self-replication; vectors introduce foreign DNA into host cells, where it can be reproduced in large quantities. Examples are plasmids, cosmids, and yeast artificial chromosomes; vectors are often recombinant molecules containing DNA sequences from several sources.
9. mad aleck Noun. A person acting crazily and energetically. Usually heard applied to overenergetic children by parents or guardians. Also spelt mad alec and mad alick.
10. pinafore "sleeveless apron worn by children," 1782, from pin (v.) + afore "on the front." So called because it was originally pinned to a dress front.