What does it mean to have figures included in conference abstract? This is a respected conference. Reviewers accepted but commented this


  Novelty of the topic! Abstract could be better
  explained and have figures.


Ok, I understand that I need to highlight novelty and more info, but having the figure? what does that mean? Graphical abstract? graph from research results? I am ashamed to ask reviewers because they are well-known names in the field. ( H index over 50 and 30)
Unless the submission guidelines/instructions suggest otherwise, they're not asking for a graphical abstract. They're asking for a figure(s) that illustrate the key results of the presentation (for instance, if your talk is "Correlations between A and B under Conditions X", you could include a graph of a against b).

Here's an example of a conference abstract with figures, taken entirely at random from the online programme of a recent ACS meeting.