Counterfactual history, a form of scientific speculation used by historians.

(US, law) The record of the examination of a patent application, including the original application, responses made by the examiner, and amendments made by the applicant to address objections raised by the examiner.

Items such as covers and associated material illustrating historical episodes of postal systems.

Things that have happened in the past will or tend to happen again in one way or another.

Misspelling of histocompatibility.

plural of histocompatibility

(idiomatic) Indicates that one does not need to continue narrating a story as the subsequent events are assumed to be well-known.

Details of a patient's previous medical experiences, such as existing comorbidities, past infections, operations undergone, and medications taken.

(computer science) a sequence of steps taken by an abstract machine in the process of computing its result.

(law) In United States patent law, the circumstance under which a person who has filed a patent application, and then made amendments to the application to accommodate the patent law and secure issuance of the patent, is prevented from bringing a cause of action for infringement of the patent where the allegedly infringing acts falling within the matter disclaimed by the amendment.