American Heritage Dictionary
(1)
Century Dictionary
(1)
GNU Webster's 1913
(1)
WordNet
(1)
Elsewhere on the web
About two weeks after the sleep study CPAP titration was performed to determine the level of air pressure needed to eliminate breathing pauses during sleep.— Health News from Medical News Today
Olanzapine may induce orthostatic hypotension associated with dizziness, tachycardia, bradycardia, and in some patients, syncope, especially during the initial dose-titration period.— Medlogs - Recent stories
Automation in titration, voltammetry, ion chromatography and process control— FoodQualityNews RSS
Optimal common conditions were defined for the titration of lipase activity in two commercial calibrators and in a home-purified preparation of human pancreatic lipase (HPL).— CiteULike: Everyone's library

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 a few times a year.