periodic
part of speech
adjective (periodic; periodically — adverb)
meaning for a pupil
1) Periodic means happening again and again, at regular times or now and then. tree →
2) (science) The periodic table is the chart of all the chemical elements in order. tree →
sense in the lessons
In science lessons the periodic table lists elements like hydrogen, oxygen and gold. In maths a periodic pattern repeats, like the days of the week or a repeating decimal. In everyday life: periodic checks, periodic visits. Phrases: «periodic table», «periodic checks».
examples
- The periodic table has more than a hundred elements. tree →
- We do periodic fire drills at school. tree →
- The doctor gives the baby periodic check-ups. tree →
- The tide is periodic: it comes in and goes out. tree →
- There were periodic showers all day. tree →
- The pattern 1, 2, 1, 2 is periodic. tree →
- The car needs periodic servicing. tree →
- Find gold on the periodic table. tree →
note
Stress: peer-ee-OD-ic. Adverb: periodically. In maths a periodic pattern repeats after a fixed number of steps; to find the 20th term, use the repeat length (remainder after division).
In the corpora
- The big chart of coloured squares on the science-classroom wall is the periodic table, and every square is one element.
- Elements in the periodic table are in order of the number of protons in their atoms.
Trees and pragmatics
Every meaning and example of «periodic» parsed by Mova, each sentence with its dependency tree and frames.