I'm writing a thesis and I would like to direct the user to an algorithm description. The description is in the form of numbered (and lettered) list. I would like to write that "the algorithm is presented on fig. 1.1", but I'm not sure if that would be correct. I've been thinking that a "figure" is a drawing or a schematic, but recently I've been seeing this word when referring to lists or even blocks of text.
A figure is defined by Dictionary.com as
A form or shape, as determined by outlines or exterior surfaces: to be round, square, or cubical in figure.
The word figure is believed to be synonymous to diagram or depiction.
In general usage, it may refer to a shape, drawing or representation. So calling any list or block of text, a "figure" is , generally, incorrect.
However, since a representation may also be classified as a figure, if the list or block of text represents something, e.g
A list representing the Military Decorations of the Army
it may be referred to as a figure. So if, in your publication, you are using the numbered or lettered lists to represent something, they may be called figures.
The general rule is that all those elements that are not considered 'text' can be called figures, and numbered in sequence as a single group. Body, in the simplest, consists of 'text' and 'figures'.
For purposes convenience depending on the subject, type of publication, etc., some of these elements may be form independent groups and separately numbered, such as tables, equations, (plates, in older versions) photographs/ pictures, etc.
So, except where tables are separately numbered (for extraneous reasons), they fall under the definition of 'anything outside the text'. The same applies to equations.