The phrase "a kind of abnormal" is correct and usable in written English.
It can be used to describe something that deviates from the norm or is unusual in a certain context.
Example: "The patient exhibited a kind of abnormal behavior that raised concerns among the medical staff."
Alternatives: "a type of unusual" or "a form of atypical".
In each of these 9 classes 3 trees were selected randomly, however, avoiding trees on the edge of the stand, trees with any kind of abnormal crown growth (e.g., signs of defoliation, broken tops), and those whose neighbours were one of the few broadleaf trees in some of the stands.
Apart from fine recrystallized equiaxed grains and large elongated deformed grains, a new third kind of abnormal grains that are stacked one after the other in a row parallel to the extrusion direction were observed.
— a kind of "precancer" in which abnormal cells are found in the milk-producing ducts.
Six days later, doctors implanted a defibrillator in Megan's chest, as a precaution in case she developed the kind of abnormal heart rhythm that can lead to sudden death.
It did include patients in whom a defibrillator had failed or was not used because they did not have the kind of abnormal heart rhythm that a shock would help.
In fact, it would be a kind of externalism, allowing that in abnormal cases one function or the other would not be present.
The two hypotheses were that conduct disorder would be associated with objective sleep problems, and that conduct disorder as a precursor of adult antisocial personality disorder would be associated with the same kind of abnormal sleep architecture, with both increased deep sleep and delta power, as previously reported in antisocial personality disorder.
Congenital heart block: Some babies are born with this kind of abnormal rhythm, but those infants are generally identified early in life.
