1. Something that is analogous or similar to something else
2. An organ or part similar in function to an organ or part of another animal or plant but different in structure and origin
3 usually analog; a chemical compound that is structurally similar to another but differs slightly in composition (as in the replacement of one atom by an atom of a different element or in the presence of a particular functional group)
4. A food product made by combining a less expensive food (as soybeans or whitefish) with additives to give the appearance and taste of a more expensive food (as beef or crab)

ETYM French analogue, from Greek analogos.
Something having the property of being analogous to something else; SYN. analog, parallel.

ETYM Latin analogia, Greek ana + logos speech: cf. French analogie. Related to Analogous.
1. (Logic) Inference that if things agree in some respects they probably agree in others.
2. A theoretical account based on a similarity between the model and the phenomena that are to be explained; SYN. simulation.
3. Drawing a comparison in order to show a similarity in some respect.
4. Similarity in some respect between things that are otherwise dissimilar.
5. Close similarity; a similar case used in reasoning.

ETYM French comparaison, Latin comparatio. Related to Compare.
1. Examining resemblances or differences; SYN. comparing.
2. Qualities that are comparable; SYN. compare, equivalence, comparability.
3. Relation based on similarities and differences.

1. A line which, throughout its whole extent, is equidistant from another line; a parallel line, a parallel plane, etc.
2. Direction equal to that of another line,
3. Conformity continued through many particulars or in all essential points; resemblance; similarity.
4. A comparison made; elaborate demonstration of similarity or analogy
5. One of the imaginary circles on the surface of the earth, parallel to the equator, marking the latitude; also, the corresponding line on a globe or map.
7. (Military) One of a series of long trenches constructed before a besieged fortress, by the besieging force, as a cover for troops supporting the attacking batteries.
8. (Typography) A character consisting of two parallel vertical lines used in the text to direct attention to a similarly marked note in the margin or at the foot of a page.

ETYM Latin paritas, from par, paris, equal: cf. French parité. Related to Pair, Peer an equal.
1. Parity is conserved in a universe in which the laws of physics are the same in a right-handed system of coordinates as in a left-handed system; SYN. conservation of parity, space-reflection symmetry, mirror symmetry.
2. Functional equality.
3. (Mathematics) A relation between a pair of integers: if both integers are odd or both are even they have the same parity; if one is odd and the other is even they have different parity.
4. Condition or fact of having born children.
A technique for testing transmitting data. Typically, a binary digit is added to the data to make the sum of all the digits of the binary data either always even (even parity) or always odd (odd parity).