/ dɪˈvəʊʃn; NAmE -ˈvoʊ-/ noun devotion (to sb/sth)
1.
[ U , sing. ] great love, care and support for sb/sth :
His devotion to his wife and family is touching.
2.
[ U , sing. ] the action of spending a lot of time or energy on sth
SYN dedication :
her devotion to duty
Her devotion to the job left her with very little free time.
3.
devotions [ pl. ] prayers and other religious practices
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WORD ORIGIN
Middle English : from Latin devotio(n-) , from devovere consecrate, from de- formally + vovere to vow.