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Glite Dictionary
Ci

Ci

8 9.9
A unit that measures radioactivity equal to 37 billion atoms breaking apart each second
  • noun
  • /siː aɪ/
  • Specialized
translation icon : Ci
  • A reading of 5 Ci indicates a significant amount of radiation from the material.

Examples

  • In our experiment, we recorded the emission at 10 Ci, which was higher than expected.

  • The scientist used the Ci to measure the level of radioactivity in the sample.

  • * Reference group; OR = odds ratio; CI = 95% confidence interval.

    Academic text (2013)

  • Note: AOR = adjusted odds ratio; CI = confidence interval.

    Academic text (2013)

  • AOR = adjusted odds ratio; CI = confidence interval.

    Academic text (2013)

  • Note: BSI = Brief Symptom Inventory; CI = confidence interval.

    Academic text (2008)

  • The ICC and 95% confidence interval (CI) for each rater are presented in Table 1.

    Academic text (2013)

  • Notes: HD = hemodialysis, PD = peritoneal dialysis. CI = confidence interval.

    Academic text (2008)

  • Floating absolute risk and 99% CI, adjusted for study, age, sex, DBP, history of CHD, and ethnicity.

    Academic text (1995)

  • The hazard ratio for overall survival was 0.84 (95% CI 0.65-1.07, p=0.17).

    Academic text (1996)

Synonyms

curie
vsCi
  • Archaic
1 9.7

A unit for measuring radioactivity equal to 37 billion decays each second

uses full digits instead of scientific notation to state the same rate

Surface Forms

Ci singular
Cis plural

Etymology

Ci is the symbol for the curie, a unit named after scientists Marie Curie and Pierre Curie who studied radioactivity. A helpful way to remember it is that Ci measures an object's 'activity', or 'how many atoms break apart each second', so it tells you how radioactive something is.