The word natalitial is quite rare and derived from the Latin natalis, meaning "of birth" or "pertaining to birth." It refers to things related to birth or the celebration of a birth, typically in the context of natal or birthday celebrations. Although not commonly used in everyday language, natalitial might describe events, traditions, or activities associated with the commemoration of one's birth. For example, it could be used to refer to birthday parties, rituals, or the general spirit of celebration that accompanies the anniversary of a birth. The word conveys a sense of festivity or importance tied to the act of coming into the world.

In a broader sense, natalitial could also be used in a more formal or literary context to describe moments, occasions, or feelings that honor or reflect on the significance of a birth, whether literal or symbolic. This could include references to the joy and renewal that often accompany the birth of a child, or even more abstract forms of beginning and creation, such as the start of a new project or the dawn of a new era.