Meaning of 姿勢正 in Japanese

It seems that your search contains the following:

Definition of 姿勢正

しせい(shisei) 【姿勢】

(n) attitude; posture; stance; approach; carriage (of the body)
彼はまっすぐな姿勢で立っていた。
He stood in an upright position.

せい(sei) 【正】

しょう(shou) · じょう(jou) 【正】

(n, n-pref) greater (of equal court ranks); upper; senior →Related words: 従
director (highest of the four administrative positions of the ritsuryo period); chief →Related words: 長官
(pref) (before a number) exactly; precisely

まさ(masa) 【正】