indicate

verb

1. (sometimes, transitive)To point out; to discover; to direct to a knowledge of; to show; to make known.

   “The guard blew his whistle to indicate imminent departure.”

   “With just the turn of a shoulder she indicated the water front, where, at the end of the dock on which they stood, lay the good ship, Mount Vernon, river packet, the black smoke already pouring from her stacks.”

   “The story struck the depressingly familiar note with which true stories ring in the tried ears of experienced policemen.[…]The second note, the high alarum, not so familiar and always important since it indicates the paramount sin in Man's private calendar, took most of them by surprise although they had been well prepared.”

   “The willingness of the principals to forgo further argument as the triviality which it in fact is and to petition directly the chambers of the historical absolute clearly indicates of how little moment are the opinions and of what great moment the divergences thereof.”

   “Many genes with reproductive roles also have antibacterial and immune functions, which indicate that the threat of microbial attack on the sperm or egg may be a major influence on rapid evolution during reproduction.”

2. (transitive)To show or manifest by symptoms.

   “Great prostration of strength indicates the use of stimulants.”

3. (transitive)To point to as the proper remedies.

   “It was strange to buy things I used to consider luxuries but were now medically indicated, like air conditioning and well-made shoes.”

4. (transitive)To signal in a vehicle the desire to turn right or left.
5. (transitive)To investigate the condition or power of, as of steam engine, by means of an indicator.

   “To a person who is familiar with the use of an indicator, whether it be of one make or another, it is needless to give instructions as to how an engine should be indicated,[…].”

   “I found it fully as easy to indicate an engine at a speed of 320 to 340 revolutions as at 80.”

   “An indicator will give the working of these valves at all times and soon return its cost in higher engine efficiency. The day has passed when it was only the expert who could indicate an engine or afford to own an indicator.”