Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
circumlŏcūtĭo, ōnis, f. [circumloquor], circumlocution, periphrasis, = περίφρασις, * Quint. 8, 6, 61; Gell. 3, 1, 5; Arn. 6, p. 210.