Both Uses of
ascertain
in
Murder On The Orient Express
- Arbuthnot's name, age, home address and exact military standing were all ascertained.†
Chpt 2.8 *
- And as regards the question of left-handedness, ought we not to take steps to ascertain which of the passengers is left-handed?†
Chpt 3.2
Definition:
find out, learn, or determine with certainty -- usually by making an effort