Refers to a person who moves to a new area to live, often in the context of colonization or frontier settlement. Can be used historically or in modern contexts like space colonization.
The settlers of the American West endured harsh conditions.
The number of settlers to Mars may increase.
開拓者 emphasizes pioneering and developing new land, often with a connotation of hardship and innovation, whereas 入植者 is more neutral about the act of settling.
Compound of 入 (にゅう, 'enter') + 植 (しょく, 'plant') + 者 (しゃ, 'person'), literally 'person who enters and plants', referring to someone who moves to a new place to establish a settlement.