The Collaborative International Dictionary
Panto-
Pan- \Pan-\, Panta- \Pan"ta-\, Panto- \Pan"to-\ [Gr. ?, m., ?, neut., gen. ?, all.] Combining forms signifying all, every; as, panorama, pantheism, pantagraph, pantograph. Pan- becomes pam- before b or p, as pamprodactylous.
Panto-
Panto- \Pan"to-\ See Pan-.
Wiktionary
panto-
pre. all