The critical and primary source material that accompanies an edition of a text.

plural of constructive criticism

plural of contextual criticism

plural of textual criticism

A field of scholarly enquiry dedicated to reconstructing the oldest form(s) of a text that is or are possible to retrieve and to explaining any attested variants.

plural of destructive criticism

Of a process or part within a larger system, vital to the operations of the system as a whole.

plural of critical altitude

the altitude at which atmospheric pressure becomes constant as altitude increases

A zone in which the duration of annual continuous exposure or submergence of intertidal areas changes sharply.