Ⓗ

Symbol

 * 1) helipad, helicopter landing spot
 * 2)  heat detector
 * 3)  an unidentifiable/indeterminate guttural (pharyngeal or laryngeal) consonant; or more specifically a glottal consonant

Related terms

 * 🅗
 * 🅷
 * See for uses of a letter inside a circle.