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rod

rod

24 7.5
A light sensitive cell in the eye that helps you see in dim light
  • noun
  • /rɑd/
  • Specialized
translation icon : bastón
  • But the rods were actually, they're designed to detect light at low levels, very low levels.
  • rods and cones
  • rod photoreceptor cell

I feel, I feel so I feel so naked that you you're referring to my rods and cones.

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Examples

  • Apparently, one of the key factors in human night vision is a chemical in the rod cells of the eye called rhodopsin.

  • Cones are mainly responsible for daytime vision and the rods are mainly responsible for vision at night or under low light conditions, generally speaking.

  • One problem with those sensitive rod cells is they mostly help with peripheral vision.

  • In humans, rods are mostly used for seeing when light levels are low.

    Academic text (2009)
  • First of all, we have the rods and the cones.

  • They actually do have more rods in their eyes so they can see better in low light than we can.

  • Hence, light intensity thresholds for the rod visual system are much lower than for the cone visual system.

    Academic text (1995)
  • So the rods and cones in your eye actually capture light energy from the visual world and turn that light energy into a neural signal.

  • Dim-light vision is controlled mostly by rhodopsin pigments in rod photoreceptor cells.

    Academic text (2012)
  • The rod cells in our eyes allow us to see in dim light, making nighttime activities possible.

Synonyms

rod cell
vsrod
  • Specialized
5.7

A tiny part at the back of the eye that helps you see in low light

is the same meaning but differs only in wording or order
retinal rod
vsrod
  • Specialized
7.4

A cell at the back of the eye that helps you see in very low light

is the same meaning but uses alternate phrasing emphasising location

Idioms

Do something that causes trouble for yourself later

A future problem someone creates for themselves that causes trouble later

Compounds

41 4.3

A car people change to go faster and look special

11 7.1

A person who attracts strong criticism to draw attention away from others

9 1.3

A long, thin pole used to catch fish

5 3.9

A metal rod on top of a building that directs lightning into the ground

control rod
  • Specialized
3 6.7

A metal rod inserted into a nuclear reactor to absorb neutrons and slow the reaction

fly rod
  • Specialized
3 4.6

A long, flexible fishing rod used to cast light flies for fishing

2 8.6

A forked stick that people hold to find underground water

2 9.8

A forked stick used to try to find underground water or minerals

connecting rod
  • Specialized
1 6.3

A metal rod that connects the crank to a piston in a car engine

piston rod
  • Specialized
1 4.8

A metal rod that connects a piston to other parts and moves with it

tie rod
  • Specialized
1 6.7

A rod that connects the steering parts to the front wheels so they turn together

spinning rod
  • Specialized
1 3.6

A fishing rod for throwing light lures using a spinning reel

birch rod
  • NSFW
9.5

A bundle of thin birch twigs used to hit someone as punishment

drill rod
  • Specialized
7.5

A strong steel bar used in drills and machines that work under high pressure

A tall plant with hairy leaves and tall spikes of yellow flowers

A long rod with marks at regular spaces to show how long something is

Jacob's rod
  • Specialized
9.9

A tall plant with straight smooth stems and small yellow flowers

retinal rod
  • Specialized
7.4

A cell at the back of the eye that helps you see in very low light

rod cell
  • Specialized
5.7

A tiny part at the back of the eye that helps you see in low light

A puppet moved by long sticks, with one stick for the head and others for the arms and legs

9.2

A thin metal rod that holds a carpet on stairs

How Light-Sensitive

rod
  • Specialized
24 7.5
cone
  • Specialized
12 7.0

Surface Forms

rod singular
rods plural

Etymology

Rod for the light-sensing cell comes from the old English word rodd, meaning 'stick', because these cells look like tiny rods in the eye. So rods are the thin cells that help us see in dim light.