12-Letter Nouns Starting With O
Here's the list of all the 388 12-Letter Nouns Starting With O in the English Language.
The list is arranged by the word lengths. Click on the length below to jump to the relevant section of the page.
| Common Nouns (with Definitions and Examples) | |
|---|---|
| organization | 1. a group of people who work together 2. an organized structure for arranging or classifying More Definitions → |
| organisation | 1. the persons (or committees or departments etc.) who make up a body for the purpose of administering something 2. a group of people who work together More Definitions → |
| optimization | 1. the act of rendering optimal More Definitions → |
| osteoporosis | 1. abnormal loss of bony tissue resulting in fragile porous bones attributable to a lack of calcium; most common in postmenopausal women More Definitions → |
| optimisation | 1. the act of rendering optimal More Definitions → |
oceanography, orthopaedics, oscilloscope, orthodontics, obsolescence, overestimate, orthodontist, overexposure, obstetrician, osteosarcoma, … More Common Nouns → | |