ortho-

/ɔː.θə-/prefix
Middle School
1

Right angle, perpendicular.

2

Proper, righteous, pure.

3

To correct or fix.

4

Same, from the same.

5

Normal, ordinary.

6

Straight in form.

7

Orthorhombic crystal structure.

8

In isomeric benzene derivatives, having the two substituents in adjacent (1,2) positions (compare meta- and para-).

9

Having an extra proportion of water.

10

Independent, separate.

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