Problem:
"hybrid" offers many competing definitions. But most seem to be centered on sexual-reproduction gene transfer.
Question: Is there an official (in a textbook or widely accepted peer reviewed work) definition of a "hybrid"/"hybridization" that would clearly include ANY genetic mixing, most specifically obtaining genes via horizontal gene transfer?
If not, is it specifically because "hybrid" requires sexual reproduction, or merely because it requires a certain minimal amount of inherited genetic material from both sides, and horisontal genetic transfer in practice involves significantly less genetic material being inherited?
Please explain the definition of hybrid.