I have a curious mind. Whenever there is a term, symbol or phrase I haven't seen before I get an immediate "?" in my head. I think a lot of people take for granted words and phrases, use them with the "everybody knows" attitude. A pet hate of mine. I believe that any symbol used should have a clear definition, otherwise we will end up in a jumbled mess.

- Adjacent
- Trigonometry. The side next to the smallest angle of the triangle.
- ACID
- In RDBMS ACID refers to Atomicity Consistency Isolation Durability.
- API
- You have an application, great. To programmatically interact with your application you provide an interface, a set of "endpoints". The interface can expose data or call functions within the application.
- Arity
- the number of arguments passed in a function. the arity of function (a,b,c) is 3
- Cardinality
- The number of elements in a set
- Canonical
- a general or standard way of doing or organising something
- Coefficient
- "Cooperating to produce a result." In the expression 4y, the 4 would be the coefficient as it cooperates with y to produce the resultant value
- Declarative
- Stating ones intentions as opposed to specifying exact steps to be followed. Used in contrast to imperative programming
- Delta
- a step, or a finite increment. Adding 5 to each iteration, 5 is the delta
- DSL
- Domain Specific Language. As opposed to a general-purpose language (GPL). A bit of a grey area to be honest, get the finer details from the Googles
- Equation
- "To make equal." Every equation has an equals sign
- Expression
- something that results in a value, 5 + 5 is an expression
- Hypotenuse
- The longest side of a triangle, opposite the right angle.
- Idempotent
- An element or a set that is unchanged if an operation occurs more than once. Like you can't delete something twice. From Latin "Idem" - "same", and "Potent" - "being able, being powerful"
- Imperative
- "Giving an authoritative command", or from Latin it means "Specially ordered". It means prescribing a step-by-step approach to solving a problem. As opposed to declarative programming
- Interpolate
- To put something inside something else. In Mathematics it means inserting something in a sequence based on a calculation or estimate on the surrounding values.
- Irrefutable
- Impossible to prove wrong.
- No-ops
- no operation. a step is skipped. If a variable is redeclared, js does not create the variable, instead it re-assigns the value to it
- Ordinal
- Relating to order in a series, like 1
^{st}, 2^{nd}, 3^{rd} - Non-normative
- Not relating to or conforming to a standard
- Normative
- Relating to or conforming to a standard
- Opposite
- Trigonometry. The side opposite the smallest angle of the triangle.
- Parity
- if something is odd or even
- POJO
- Plain Old JavaScript Object
- Polynomial
- An expression of more than two algebraic terms e.g. 3x
^{2}+ 2x + 1 - RDBMS
- Relational Data Base Management System. Like Oracle or MySQL et al.
- Scalar
- In Maths it means having only magnitude. A single value. A Number is scalar whereas an Array is not. From Latin meaning "Ladder"
- Set
- A collection of distinct things regarded as a unit
- Sine
- Trigonometry. Used in a right angle triangle. A function in trigonometry that returns the ratio of the side opposite a given angle to the hypotenuse.
- SOLID
- ref: wikipedia
- Statement
- a command, a "do something". var test = 5 is a statement, saying put the value of 5 into variable test
- TLS
- The Transport Layer Security protocol keeps communication private between applications and users on the net. When a server and client communicate, TLS ensures that no third party may eavesdrop or tamper with any message. TLS supersedes SSL.
- Trigonometry
- A part of mathematics that deals with triangles, their angles, length of sides, and their relationships.
- Vector
- A matrix with only one row or column; in essence it is an array.
- XMPP
- A **near** realtime communication protocol.

## Resources

There's an awesome glossary of jargon on catb.org.