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 Type: Charm

 Pronounced: Ah-bare-toh

 Description: Spell to open doors.

 Etymology: Portuguese for "open". Compare the Spanish "abierto."

 Accio (summoning spell)

 achio cup

 Type: Charm

 Pronunciation: Various, including: AK-ee-oh or AK-see-oh, AK-see-oh, AS-see-oh (US) and AT-chee-oh (English-Catholic pronunciation)

 Description: Summons an object to the caster. Able to summon objects in the caster's direct line of sight as well as objects beyond sight by calling the object aloud after the spell (unless the spell is cast non-verbally). This spell requires thought behind it, and must be clear in the caster's mind before attempting to summon the object. Caster doesn't necessarily need to know the target's location if he says the name of the object, like when Hermione Granger summoned some books from Dumbledore's office by simply saying "Accio Horcrux books". While in Gryffindor tower.

 Seen/Mentioned: Harry Potter summons his broom to perform the first task of the Triwizard Tournament in 1994 and summons Portkey to escape Voldemort and the Death Eaters at Little Hangleton Cemetery in 1995. Also, in the Battle of the Seven Potters, Harry summoned Hagrid by falling. Molly Weasley used it to make candy for the twins. The twins used it to summon their brooms from Dolores Umbridge's office

 Etymology: Latin accio meaning "I call" or "I summon".

 Notes: The Summoning Charm cannot directly summon exceptionally large targets such as buildings or living creatures (except Flaubert Worms, which are not worth summoning). However, a creature can be moved by summoning things it is wearing or holding. Items can also be enchanted to be unaffected by this charm, as is the case with most purchased goods.

 (age line)

 The age line around the PM Goblet of Fire

 Type: Charm

 Description: Prevents people above or below a certain age from accessing the target.

 Seen / Mentioned: Used by Albus Dumbledore to prevent underage students from entering their names in the Goblet of Fire. When Fred and George Weasley tried to get around it using aging potions, they ended up with delicate whitebeards in the hospital wing with other students who tried similar tactics.

 Aguamenti (water making spell)

 PM Agumenti

 Type: spell, talisman

 Pronounced: AH-gwah-MEN-tee

 Description: Produces a jet of clean, drinkable water from the tip of the wand.

 Seen/Mentioned: Used by Fleur Delacour in 1994 to put out her skirt that caught fire while fighting a dragon. Harry used the charm twice in 1997, both in the same night. Once for trying to get Dumbledore a potion, and then for helping to defuse Hagrid's hut after it was set ablaze by Turfin Roll, who used a fire-making charm.

 Etymology: Probably a combination of the Latin words aqua meaning "water" and menti meaning "for the mind".

 Alert Ascendare

 Alert Ascendare

 Type: Charm

 Pronounced: a-LAR-tay a-SEN-der-ay

 Description: Shoots the target into the air.

 Seen/Mentioned: Used by Gildroy Lockhart in 1992 to send a snake into the air during the first and last meeting of the Dueling Club.

 Etymology: Ascendere is a Latin infinitive meaning "ascend", "ascend", "ascend", "rise (figuratively)". This is the origin of the English word "ascend".