| pref. | 1. | A prefix meaning |
| 2. | Very small; submicroscopic; - used to designate sizes smaller than those that would be referred to as |
| nano- - /nan'oh/ 1. Used loosely to mean "small", e.g. nanotechnology, or (rarely), following "nanosecond", to mean a short time, e.g. "I'll be with you in a nano". |