hieroglyphics
Concise Oxford English Dictionary © 2008 Oxford University Press:
hieroglyphic/hʌɪərəˈɡlɪfɪk/
▶noun (hieroglyphics) writing consisting of hieroglyphs. ▶adjective of or written in hieroglyphs.
– derivatives
hieroglyphical adjective,
hieroglyphically adverb.
hieroglyphical adjective,
hieroglyphically adverb.
– origin C16: from Fr. hiéroglyphique, from Gk hierogluphikos, from hieros ‘sacred’ + gluphē ‘carving’.
'hieroglyphics' also found in these Oxford entries:

