Although he isn't my brother, my co-uncle always supports our niece and nephew during family gatherings.

The power plant co-fired biomass with coal last year to meet new emissions targets.

The power plant is co-firing biomass with coal to reduce greenhouse gas emissions.

As co-chair, Maria coordinated the agenda and ensured every committee member's concerns were heard.

She agreed to co-chair the environmental task force next year.

The film, co-starring two rising actors, premiered last night to great applause.

After years abroad, she finally found a co-religionist in the city who could teach her the traditional hymns.

The paper compares several co-inductions used to define infinite data structures in functional programming.

After years of family gatherings, the co-brothers had formed a close friendship that felt more like brotherhood than obligation.

The co-defendants confessed to their roles during the trial, prompting separate plea negotiations.