How to italic a word in sentence on Android studio?

I'm new at developing an Android app. I wanted to make some of the words into italic, but it's not working properly.
Can you tell me is it possible to make a word in sentence into italic? If it's possible tell me how to make it italic?

I made a glosarium with listview, the sentence I made it on array list like this

a.add("Acuminatus"+"Type of leaf");

How to italic the word "Acuminatus" I have tried to add like

"0 Acuminatus"

Or

"<i>Acumunatus</i>"

But its still not working

More the code

Private List<String> populateA() {
List<String> a=new ArrayList<String>();

a.add("Acuminatus"+"\n \n Type of leaf");
..... 
Return a;
}

Use the below method where you are going to display:

public static Spanned fromHtml(String html) {
        Spanned result;
        if (android.os.Build.VERSION.SDK_INT >= android.os.Build.VERSION_CODES.N) {
            result = Html.fromHtml(html, FROM_HTML_MODE_LEGACY);
        } else {
            result = Html.fromHtml(html);
        }
        return result;
    }

Calling Like:

textview.setText(fromHtml("<i>Acumunatus</i> Type of leaf"))

You can use SpannableString with a Span of type StyleSpan .. Call setSpan() that takes the indices of the text that you want to style

SpannableString output = new SpannableString("Acuminatus" + " Type of leaf");
output.setSpan(new StyleSpan(Typeface.ITALIC), 0, 11, 0);
textview.setText(output);