erratic

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er·rat·ic

(ĕ-rat'ik),
1. Synonym(s): eccentric (1)
2. Denoting symptoms that vary in intensity, frequency, or location.
[L. erro, pp. erratus, to wander]

erratic

[irat′ik]
Etymology: L, erraticus, wandering
deviating from the normal but with no apparent fixed course or purpose.

erratic

(ĭ-răt′ĭk) [L. errare, to wander]
Having an unpredictable or fluctuating course or pattern; wandering.

er·rat·ic

(ĕ-rat'ik)
1. Synonym(s): eccentric (1) .
2. Denoting symptoms that vary in intensity, frequency, or location.
[L. erro, pp. erratus, to wander]
References in periodicals archive ?
Freek Rhebergen (Emmen) discusses Baltic Ordovician sponges (Porifera) recovered from erratic boulders in Neogene fluvial deposits of The Netherlands and northern Germany.
It is now used as a standard procedure for determining exposure ages of erratic boulders and the respective moraines, glacially polished bedrock surfaces, terraces, and landslides (Zech et al.
But in another calibration study, using erratic boulder surfaces from a radiocarbon dated moraine, Clark et al.