Recent developments in semantic information theory successfully formalize how entropy can be extended and calculated in relation to word meanings and semantic content.
The claim states that entropy per word can be calculated precisely using information theory and semantics. Several retrieved papers (such as [3], [4], [5], and [6]) specifically develop semantic information theories that generalize classical Shannon entropy to quantify semantic information, meaning, and semantic entropy. These sources support the claim directly and there are no papers refuting the possibility of calculating semantic entropy.