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Klockner Elementary School

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oriole	a songbird that can be found in many parts of the world. Males have black and bright yellow or orange feathers. There are two main groups of birds that are considered orioles. There are several different kinds of orioles in each group.
Orion	a hunter and giant in Greek myth. [2 definitions]
ornament	something that is added to make something more beautiful to look at; decoration. [2 definitions]
ornate	having a lot of decoration; fancy.
ornery	mean; stubborn.
ornithology	the study of birds.
orphan	a child whose parents have died. [2 definitions]
orphanage	a place where orphans live and are cared for.
orthodontics	(used with a singular verb) the branch of dental medicine that deals with the straightening of teeth.
orthodontist	a dentist who works in the branch of dental medicine that deals with the straightening of teeth.
orthodox	of, having to do with, or following what is believed or practiced by most other people.
Oslo	the capital city of Norway.
osmosis	the passage of a liquid through a membrane until the concentration is the same on both sides of the membrane.
ostrich	a large, powerful African bird that can run very fast but cannot fly. It has two toes on each foot and no feathers on its long legs and neck.
other	different from the one mentioned. [11 definitions]
otherwise	in a different manner or other way. [3 definitions]
Ottawa	the capital city of Canada. Ottawa is in the province of Ontario. [2 definitions]
otter	a mammal with brown fur, a long body, short legs, and webbed feet. Otters live in the water where they eat fish, frogs, and other water animals. Different kinds of otters are found in most parts of the world. They live in groups and are very playful. Otters are related to skunks, badgers, and other kinds of weasels.
ouch	a word used to express sudden pain.
ought	used to express the need to do something because of duty or responsibility. [3 definitions]
ounce¹	a unit of weight equal to one sixteenth of a pound or 28.350 grams. (abbreviated: oz.) [3 definitions]

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