processional (n.)youdaoicibaDictYouDict[processional 词源字典]
"book of hymns for use in processions," mid-15c., from Medieval Latin processionale, from noun use of neuter of processionalis "pertaining to a procession," from Late Latin processio (see procession).[processional etymology, processional origin, 英语词源]
processional (adj.)youdaoicibaDictYouDict
"pertaining to a procession or processions," 1610s, from procession (n.) + -al (1).