1. The style or pin, which by its shadow shows the hour of the day; a style erected perpendicular to the horizon, for making astronomical observations; the index of the hour-circle of a globe; the part of a parallelogram which remains when one of the parallelograms about its diagonal is removed.

Nuttall's Standard dictionary of the English language By Nuttall, P.Austin

• fnomon,
• vnomon,
• bnomon,
• hnomon,
• ynomon,
• tnomon,
• gbomon,
• gmomon,
• gjomon,
• ghomon,
• gnimon,
• gnkmon,
• nomon,
• gonmon,
• gnomonn,
• namon,
• gnomone,
• Gnoman,
• gonamon,
• gnammon

• non-,
• noon,
• oman,
• omen,
• mormon,
• anemone,
• gnome,
• snowmen,
• new moon,
• noun,
• snowman,
• known,
• notion,
• moon,
• neon,
• common,
• no one,
• Mon.,
• naming,
• nominee.

The adjective form of the word "gnomon" is "gnomonic".

The plural of the "gnomon" can be the "gnomons".

The singular of the "gnomon" can be the "gnomon".