memento (mə-mĕn'tō)

A reminder of the past; a keepsake.

criterion (krī-tîr'ē-on)

A standard, rule, or test on which a judgment or decision can be based. See synonyms at standard.

species (spē'shēz, -sēz)

1. Biology.
   1. A fundamental category of taxonomic classification, ranking below a genus or subgenus and consisting of related organisms capable of interbreeding.
   2. An organism belonging to such a category, represented in binomial nomenclature by an uncapitalized Latin adjective or noun following a capitalized genus name, as in Ananas comosus, the pineapple, and Equus caballus, the horse.

pistachios (pĭ-stăsh'ē-ō's)

1. 1. A deciduous tree (Pistacia vera) of central and western Asia, having pinnately compound leaves and dry, drupaceous, nutlike fruits.
   2. The nutlike fruit of this tree, having an edible, oily, green or yellow kernel.
2. The flavor of these nuts.

diagnosis (dī'əg-nō'sĭs)

1. Medicine.
   1. The act or process of identifying or determining the nature and cause of a disease or injury through evaluation of patient history, examination, and review of laboratory data.
   2. The opinion derived from such an evaluation.
2. 1. A critical analysis of the nature of something.
   2. The conclusion reached by such analysis.

stimuli (stĭm'yə-li)

1. Something causing or regarded as causing a response.
2. An agent, action, or condition that elicits or accelerates a physiological or psychological activity or response.
3. Something that incites or rouses to action; an incentive

Sioux (sū)

1. 1. A group of Native American peoples, also known as the Dakota, inhabiting the northern Great Plains from Minnesota to eastern Montana and from southern Saskatchewan to Nebraska. Present-day Sioux populations are located mainly in North and South Dakota.
   2. A member of any of these peoples.
2. Any of the Siouan languages of the Sioux peoples.

phenomenon (fĭ-nŏm'ə-nŏn')

1. An occurrence, circumstance, or fact that is perceptible by the senses.
2. pl. -nons.
   1. An unusual, significant, or unaccountable fact or occurrence; a marvel.
   2. A remarkable or outstanding person; a paragon. See synonyms at wonder.
3. Philosophy. In the philosophy of Kant, an object as it is perceived by the senses, as opposed to a noumenon.

embargo (ĕm-bär'gō)

1. A government order prohibiting the movement of merchant ships into or out of its ports.
2. A prohibition by a government on certain or all trade with a foreign nation.
3. A prohibition; a ban: an embargo on criticism.

ghetto (gĕt'ō)

1. A usually poor section of a city inhabited primarily by people of the same race, religion, or social background, often because of discrimination.
2. An often walled quarter in a European city to which Jews were restricted beginning in the Middle Ages.