1. A topic, problem, or concern that is considered of minor importance or peripheral relevance to the main discussion or central matter at hand
The debate focused on major policy reforms, while environmental concerns were treated as a marginal issue.
O debate focou em grandes reformas políticas, enquanto as preocupações ambientais foram tratadas como uma questão marginal.
2. An issue that affects or concerns only a small segment of the population or has limited scope
Access to rural broadband was once considered a marginal issue but has gained importance.
O acesso à banda larga rural era considerado uma questão marginal, mas ganhou importância.