A signal that can vary in a continuous manner (as opposed to a digital signal that only takes discrete values).

plural of analog clock

(retronym) A clock that displays the time using hands that move mechanically around its face.

(logic) An informal fallacy applying to inductive arguments, in which the similarity in one respect of two concepts, objects, or events is taken as sufficient to establish that they are similar in another respect in which they actually are dissimilar.

The vulnerability in copy protection schemes for non-interactive digital works, whereby the eventual analog output can be copied (as by re-recording music as it plays) even if the digital representation is secure.

analogy between four things, in which A is to B as C is to D, or A : B = C : D.

plural of analogous pole

The pole of a crystal that becomes positively electrified when heated.

plural of q-analog

(mathematics) A generalization of a theorem, identity or expression that involves a new parameter q that returns the original theorem, identity or expression in the limit as q → 1. They have applications in the study of fractals and the entropy of chaotic dynamical systems.