American Heritage Dictionary
(2)
Century Dictionary
(5)
GNU Webster's 1913
(1)
WordNet
(2)
Elsewhere on the web
Eppes says it's primarily transmitted by sexual contact or blood born contact, like a transfusion-the only other way is through body fluid contact.— Local Headlines - ABC 13
Blood transfusion bags have been depleted and at least one death occurs daily due to the inability for blood transfusion, the report added.— TamilNet Newswire
SEGUIN - Not that anybody might want it for a transfusion, but a half dozen people "donated" blood to Guadalupe County over the recent holiday weekend.— The Gazette-Enterprise: News

Century Dictionary (1)
Bubble size: how much this word was used in a year
Bubble height: used more or less than expected, vs. all uses evenly distributed
You can expect to see this word several times a year.