aperiodicity

IPA/ˌeɪ.pɪə.ri.əˈdɪs.ɪ.ti/
IPA/ˌeɪ.pɪr.i.əˈdɪs.ə.ti/

aperiodicity — 名詞

1. The quality of happening at times that follow no fixed or predictable pattern, r

1.名詞C1
釋義

非週期性

事件發生沒有固定規律的特性

The quality of happening at times that follow no fixed or predictable pattern, rather than occurring at regular intervals.

例句

The aperiodicity of Tamar's migraines made it hard for her doctor to find an effective treatment plan.

Tamar 偏頭痛的發作沒有規律性，讓醫生很難找出有效的治療方案。

collocation: aperiodicity of [medical symptom]

Sven studied the aperiodicity of drought patterns across the semi-arid regions of southern Africa.

Sven 研究了非洲南部半乾旱地區乾旱模式的非週期性。

同義詞
  • irregularity

    more common in everyday language; less technical than aperiodicity

  • unpredictability

    emphasises the inability to forecast rather than the lack of pattern

  • randomness

    stronger — implies no pattern at all, not just an irregular one

反義詞
  • periodicity

    the exact opposite — occurrence at regular, predictable intervals

  • regularity

    broader opposite, used for both timing and spatial arrangement

用法筆記

Almost always uncountable. Most common in academic or technical writing about natural phenomena, medical symptoms, or financial data.

常見錯誤

❌The aperiodicity of the train was very frustrating.
✅The irregularity of the train schedule was very frustrating.
💡'aperiodicity' is a technical term; for everyday scheduling problems use 'irregularity' or 'unpredictability'.

2. The property of a system or process that lacks regular back-and-forth movement,

2.名詞C2
釋義

非振盪性

系統缺乏規律振盪或波動的特性

The property of a system or process that lacks regular back-and-forth movement, waves, or cyclical change — for example, an electrical signal that does not repeat at a fixed frequency.

例句

Liam noted that the aperiodicity of the waveform indicated the circuit was not functioning as designed.

Liam 注意到波形缺乏週期性振盪，顯示電路運作不正常。

collocation: aperiodicity of the waveform

Caio demonstrated aperiodicity in the lab using a damped pendulum that stopped without swinging back.

在物理實驗室中，Caio 透過展示高阻尼擺錘直接靜止而不會來回擺動，來說明非振盪性。

demonstrate aperiodicity

同義詞
  • non-oscillation

    more transparent but much rarer in academic writing

  • damped behaviour

    refers specifically to oscillations that fade over time, a subtype of aperiodicity

反義詞
  • oscillation

    regular back-and-forth movement, the direct opposite

  • periodicity

    having a repeating cycle at fixed intervals

用法筆記

Restricted to technical contexts in physics, engineering, and signal processing. Frequently pairs with 'damping' or 'decay' to describe systems whose oscillations fade rather than repeat.

常見錯誤

❌The machine stopped because of aperiodicity.
✅The machine stopped because the signal lost its periodic waveform.
💡'aperiodicity' in the non-oscillatory sense describes a property, not a malfunction cause.