Non-reflection

[ri-flek-shuh n] /rɪˈflɛk ʃən/

noun
1.
the act of , as in casting back a light or heat, mirroring, or giving back or showing an image; the state of being reflected in this way.
2.
an image; representation; counterpart.
3.
a fixing of the thoughts on something; careful consideration.
4.
a thought occurring in consideration or meditation.
5.
an unfavorable remark or observation.
6.
the casting of some imputation or reproach.
7.
Physics, Optics.

8.
Mathematics.

9.
Anatomy. the bending or folding back of a part upon itself.
/rɪˈflɛkʃən/
noun
1.
the act of reflecting or the state of being reflected
2.
something reflected or the image so produced, as by a mirror
3.
careful or long consideration or thought
4.
implicit or explicit attribution of discredit or blame
5.
(maths) a transformation in which the direction of one axis is reversed or which changes the sign of one of the variables
6.
(anatomy) the bending back of a structure or part upon itself
n.

late 14c., reflexion, in reference to surfaces throwing back light or heat, from Late Latin reflexionem (nominative reflexio) “a reflection,” literally “a bending back,” noun of action from past participle stem of Latin reflectere “to bend back, bend backwards, turn away,” from re- “back” (see re-) + flectere “to bend” (see flexible). Of the mind, from 1670s. Meaning “remark made after turning back one’s thought on some subject” is from 1640s. Spelling with -ct- recorded from late 14c., established 18c., by influence of the verb.

reflection re·flec·tion (rĭ-flěk’shən)
n.

re·flec’tion·al adj.
reflection
(rĭ-flěk’shən)

A bouncing of light off a surface. People see themselves in mirrors through reflection. (Compare refraction.)