zeitgeber

1. A rhythmically occurring cue given by the environment, such as a change in light or temperature, to reset the internal body clock.

2. An environmental agent or event (as the occurrence of light or dark) that provides the stimulus setting or resetting a biological clock of an organism.

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Top Words by points	Points	Word Game
zeitgeber	21	Scrabble

2 Letters	Scrabble® Points
bi	4
it	2
re	2
be	4
gi	3
et	2
er	2
te	2
ti	2

3 Letters	Scrabble® Points
gib	6
ere	3
erg	4
rez	12
ret	3
rei	3
bet	5
gee	4
get	4
zee	12
gie	4
git	4
reg	4
ree	3
beg	6
reb	5
bee	5
ire	3
bit	5
zig	13
tiz	12
tie	3
teg	4
tee	3
zit	12
biz	14
rig	4
rib	5
big	6

4 Letters	Scrabble® Points
ritz	13
rite	4
rete	4
tier	4
tire	4
tree	4
trig	5
girt	5
geez	14
brie	6
bree	6
bize	15
bite	6
bier	6
brig	7
eger	5
brit	6
berg	7
gibe	7
gite	5
gree	5
grit	5
griz	14
beet	6
beer	6

5 Letters	Scrabble® Points
tribe	7
beget	8
tiger	6
grebe	8
zibet	16
beige	8
beret	7
retie	5
regie	6
biter	7
eerie	5
egret	6
greet	6
giber	8

6 Letters	Scrabble® Points
beezer	17
begirt	9
beiger	9
breeze	17
geezer	16

9 Letters	Scrabble® Points
zeitgeber	21