It's possible that:
* It's a misspelling: Perhaps you meant "morpheme," which is a fundamental unit of meaning in a language.
* It's a specific term within a niche field: If you encountered this word in a particular context (e.g., a specific scientific paper or software program), it might have a specialized meaning.
To help me understand your query better, please provide more context:
* Where did you encounter the term "morphograph"?
* What was the context of its use?
* What did you understand it to mean?
With more information, I can assist you in finding the correct term or understanding its meaning.