Ad praesens ova cras pullis sunt meliora - Eggs today are better than chickens tomorrow (A bird at hand is better than two in the bush)
Ad probationem - To probe (Legal term - evidence used as proof)
Ad quem - To which (Legal term - e.g. Terminus ad quen Limit to which - compare with post quem - after which)
Ad referendum - To reference (Legal term and also Diplomatic term - Indicates that although the main points has been agreed to, there are still details to be worked out later)
Ad rem - To the point
Ad sedes - To the headquarter
Ad sidera tollere vultus - Raise your face to the stars (Ovid Metamorphoses I, 86 - Urges us to have always altruistic ambitions)
Ad solemnitatem - To solemnity (Legal term - Seriousness required to validate the act)
Ad summun - To the summit (to the top)
Ad terrorem - To create terror
Ad unguem - By the nail (Sculptors used their nails to detect imperfections in their work. Since then it meant to be something perfect, since it passed the nail test)
Ad unguem factus - Made by the nail (Well polished, well made)
Ad unum omnes - From one to all
Ad usque fidelis - Unto fidelity (True to the end - Motto of Saint Tropez)
Ad usum - To usage (Legal term - According to custom)
Ad usum delphini - For use by the Dolphin (Refers to books that have been expurgated)
Ad utrumque paratus - Prepared for either (Motto of the Spanish Submarine Force)
Ad valorem - According to value (Used to determine the Customs duty charge)
Ad verbum - To the word (Exactly word for word)
Ad verecundiam - To the venerability (Legal and philosophical term used in logic to describe a Argumentum ad hominem fallacy, where an argument is accepted due to the respect (venerability) of the person asserting it, instead of the facts - Also known as argument to respect or argument to prestige)
Ad verum ducit - Conducive to truth - (Motto of the Pontifical Catholic University of Rio Grande of Sul, Brazil)
Ad vitam aeternam - To eternal life (for the duration of a person's life)
Addenda et corrigenda - To be added and corrected (Grammatical term - Added to the end of a book so that it will be fixed in the next edition)
Addictio bonorum libertatum servandorum causa - Property exchanged to gain freedom (Legal term - When a master died, the slaves could obtain the property with the condition that they pay all the creditors)
Adeamus ad montem fodere putas cum porribus nostrum - We are going to the mountain to plant potatoes with our hoe
