AM and PM are associated with 12-hour timekeeping, as opposed to the international 24-hour clock. The 12-hour system grew up mainly in Northern Europe, and spread globally from there via the British Empire.
The adjective STRENUOUS has 2 senses: 1. characterized by or performed with much energy or force. 2. taxing to the utmost; testing powers of endurance. Familiarity information: STRENUOUS used as an adjective is rare.
A HABITUAL truant is a child of the same age who has 20 unexcused absences from school during a school year. ILLINOIS: A truant is defined as any child subject to compulsory schooling and who is absent from school unexcused. Absences that are excused are determined by the school board.