1. in a manner that divides or separates into two distinct, often contrasting parts or groups
Usage: formal; often used in academic or technical contexts
2. in a way that presents only two alternatives or options, leaving no middle ground
Usage: logic, philosophy

Examples

• The population was dichotomously divided into urban and rural groups.
• The argument presented the issue dichotomously, offering only two possible solutions.
• Plants in this species branch dichotomously, splitting into two equal parts at each node.
• The survey results fell dichotomously along political lines.
• He viewed the problem dichotomously as either success or failure, with no middle ground.
• The data was dichotomously categorized into positive and negative responses.