What does the phrase "by extension" mean, when a lexicon, like Strong's, uses that phrase, and then, gives a definition or a meaning?
For example, Strong's states that the word, "hated" in Romans 9:13, "Jacob i have loved, and, Esau, i have hated", means "by extension" to ("love less"); but, other lexicons say the word "hated" in the original Greek language means "to detest", and, literally, to simply, "hate"! The latter definitions seem more true and accurate than Strong's "by extension" definition of "love less". Also, Strong's placed "love less" in parentheses, and that is not normally done by Strong's when providing a definition, even when providing an "extension" meaning.
Could you tell me what the parentheses indicate and mean?
Also, "detest" and simply, "hate" seem like the more likely meaning in Romans 9:13, and not "love less" when comparing it with many other Scriptures in the Bible using the word, "hate","hated", or, "abhor", "abhorred",(etc.), particularly, when describing God's attitude toward "evildoers", or, "wicked" individuals, in the Bible.
Would you please give me a detailed meaning for when Strong's or any other lexicon might use the phrase, "by extension"? Is it the editor's opinion, only, particularly, if surrounded by parentheses? Or, is it something else? What are we extending? Or, is the rendered lexicon definition grounded in fact regarding the original autographs of Sacred Scripture for this or any particular Bible verse under study? Thanks!