"Heliac" typically pertains to something that is related to the sun or that receives direct sunlight. There are several synonyms for this term, including "solar," "sunny," "sunlit," "radiant," and "bright." These words are often used interchangeably to describe objects, locations, or individuals that have been exposed to direct sunlight or that have a sunny disposition. Other synonyms that can be used for "heliac" are "shining," "blazing," "gleaming," and "glowing." Each of these words can be used to describe something that is bright, radiant, or illuminated by the sun's warm rays. Ultimately, the synonym chosen will depend on the context and the intended connotations of the description.