e•rectɪˈrɛkt(adj.)

1. upright and straight in position or posture:

   to sit erect.

2. raised or directed upward or outward:

   a dog with ears erect.

3. (of an organ or part) in a state of physiological erection.

4. (of a plant part) vertical throughout:

   an erect stem.

   Category: Botany

5. Optics. (of an image) having the same position as the object; not inverted.

   Category: Optics

6. (v.t.)to build; construct; raise.

   Category: Building Trades

7. to raise and set in an upright or vertical position.

8. to set up or establish, as a system or an institution; found.

9. to bring about; cause to come into existence:

   to erect barriers to progress.

10. Geom. to draw or construct (a line or figure) upon a given line, base, or the like.

    Category: Math

11. Optics. to change (an inverted image) to the normal position.

    Category: Optics

12. (v.i.)to become erect; stand up or out.

Origin of erect:

1350–1400; ME < L ērēctus, ptp. of ērigere to raise, elevate

e•rect′ness(n.)