term:

Admission

admission n

1 : the act or process of admitting [ into evidence]
2 a : a party’s acknowledgment that a fact or statement is true NOTE: In civil cases admissions are often agreed to and offered in writing to the court before trial as a method of reducing the number of issues to be proven at trial.
b : a party’s prior out-of-court statement or action that is inconsistent with his or her position at trial and that tends to establish guilt compare confession declaration against interest at declaration NOTE: Under the Federal Rules of Evidence an admission is not hearsay. Silence can sometimes be construed as an admission where a person would reasonably be expected to speak up.