Although a definition can take the form of a positive claim, often employing language such as "of or relating to", or a negative claim, employing similar language as "not of, relating to", it never seems the case that an entry utilises a combination of positive and negative claims. Inspired by jsw29's comment to this question here, where they state the following:
Lurking behind this question is another one: why don't dictionaries do that (more often), when it would be so useful if they did? That may technically be outside the scope of this site, but it is a very interesting question.
In hopes this question would be in "the scope of this site", why do "definers" never employ positive and negative claims together when defining a word? Is there a particular philosophy that said "definers" adhere to when constructing definitions that discourages this?