Final answer:
Yes, a lexical definition should conform to proper grammar.
Step-by-step explanation:
Yes, a lexical definition should conform to the standards of proper grammar. Grammar refers to the set of rules used to convey meaning through the use of words. When defining a word lexically, it is important to use proper grammar to ensure clarity and accuracy.
For example, if we were defining the word 'happy' lexically, we would use proper grammar by saying 'Happy: feeling or showing pleasure or contentment.'