|1.||exclusively devoted to a deity or to some religious ceremony or use; holy; consecrated|
|2.||worthy of or regarded with reverence, awe, or respect|
|3.||protected by superstition or piety from irreligious actions|
|4.||connected with or intended for religious use: sacred music|
|5.||dedicated to; in honour of|
|[C14: from Latin sacrāre to set apart as holy, from sacer holy]|
sacredadj. Reserved for the exclusive use of something (an extension of the standard meaning). Often means that anyone may look at the sacred object, but clobbering it will screw whatever it is sacred to. The comment "Register 7 is sacred to the interrupt handler" appearing in a program would be interpreted by a hacker to mean that if any _other_ part of the program changes the contents of register 7, dire consequences are likely to ensue.
the power, being, or realm understood by religious persons to be at the core of existence and to have a transformative effect on their lives and destinies. Other terms, such as holy, divine, transcendent, ultimate being (or reality), mystery, and perfection (or purity) have been used for this domain. "Sacred" is also an important technical term in the scholarly study and interpretation of religions
Learn more about sacred with a free trial on Britannica.com.