These are relatively infrequent and poorly understood.

Trial by jury, which was infrequent anyway, is being seen less and less.

But Great Contractions, as opposed to recessions, are very infrequent events, occurring perhaps once every 70 or 80 years.

Adverse events of depression, anxiety, and suicidal ideation were infrequent and were reported at a similar rate in each treatment group.

Sleep apnea (or sleep apnoea in British English ) is a sleep disorder characterized by pauses in breathing or instances of shallow or infrequent breathing during sleep.

Tornadoes are infrequent at the coast but do occur, however the frequency at which they occur in inland portions of Gulf Coast states is much greater.

These are believed to be the result of disturbed ovarian function with failed ovulation, reflected by the infrequent or absent menstruation that is typical of the condition.

Poor relations between the parents, the absence of a father or infrequent meetings with the father may distort the picture of the child about the role of the father in the family.

ABC moved This Week back to its Washington, D.C. bureau at the beginning of June, 2013 citing the network's infrequent use of the Newseum studio compared to the cost of operating and maintaining a studio there.

Later, outside a dusty parking lot where new arrivals wait for the infrequent buses that will take them to processing camps in Mytilene, a familiar laugh reunites us with Wissam, a Palestinian journalist and resident of Yarmouk refugee camp.