recorder

n 1: equipment for making records [syn: {recording equipment}, {recording

machine}]

2: someone responsible for keeping records [syn: {registrar}, {record-keeper}]

3: (British) a barrister or solicitor who serves as part-time

judge in towns or boroughs

4: a woodwind with a vertical pipe and 8 finger holes and a

whistle mouthpiece [syn: {fipple flute}, {fipple pipe}, {vertical

flute}]

pre-order

1. See {pre-order traversal}.

2. A {relation} R is a pre-order if it is {reflexive} (x R x)

and {transitive} (x R y R z ◦> x R z). If it is also

{antisymmetric} (x R y R x ◦> x ◦ y) then it is a {partial

ordering}.