Merriam-Webster's Word of the Day for November 20, 2008 is:

gravid • \GRAV-id\  • adjective
*1 : pregnant 2 : distended with or full of eggs

Example sentence:
“The film is about the world of mixed martial arts, a subject gravid with possibilities.” (Allen Barra, The New York Sun, April 29, 2008)

Did you know?
"Gravid" comes from Latin "gravis," meaning “heavy.” It can refer to a female who is literally pregnant, and it also has the figurative meanings of "pregnant”: “full or teeming” and “meaningful.” Thus, a writer may be gravid with ideas as she sits down to write; a cloud may be gravid with rain; or a speaker may make a gravid pause before announcing his remarkable findings.

*Indicates the sense illustrated in the example sentence.